218172 (number)
218,172 (two hundred eighteen thousand one hundred seventytwo) is an even sixdigits composite number following 218171 and preceding 218173. In scientific notation, it is written as 2.18172 × 10^{5}. The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors. There are 72,720 positive integers (up to 218172) that are relatively prime to 218172.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 6
 Sum of Digits 21
 Digital Root 3
Name
Short name  218 thousand 172 

Full name  two hundred eighteen thousand one hundred seventytwo 
Notation
Scientific notation  2.18172 × 10^{5} 

Engineering notation  218.172 × 10^{3} 
Prime Factorization of 218172
Prime Factorization 2^{2} × 3 × 18181
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  109086  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 218,172 is 2^{2} × 3 × 18181. Since it has a total of 4 prime factors, 218,172 is a composite number.
Divisors of 218172
12 divisors
τ(n)  Total Divisors  12  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  509096  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  290924  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  42424.666  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  467.08885664293  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  5.1425742885429  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 218,172 can be divided by 12 positive divisors (out of which 8 are even, and 4 are odd). The sum of these divisors (counting 218,172) is 509,096, the average is 424,24.,666.
Other Arithmetic Functions (n = 218172)
φ(n)  Euler Totient  72720  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  18180  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 19414  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 72,720 positive integers (less than 218,172) that are coprime with 218,172. And there are approximately 19,414 prime numbers less than or equal to 218,172.
Divisibility of 218172
m  2  3  4  5  6  7  8  9 

n mod m  0  0  0  2  0  3  4  3 
The number 218,172 is divisible by 2, 3, 4 and 6.
Classification of 218172
By Arithmetic functions
 Refactorable
 Abundant
Expressible via specific sums
 Polite
Base conversion (218172)
Base  System  Value 

2  Binary  110101010000111100 
3  Ternary  102002021110 
4  Quaternary  311100330 
5  Quinary  23440142 
6  Senary  4402020 
8  Octal  652074 
10  Decimal  218172 
12  Duodecimal  a6310 
16  Hexadecimal  3543c 
20  Vigesimal  1758c 
36  Base36  4occ 
Basic calculations (n = 218172)
Multiplication
n×yn×2  436344 

n×3  654516 
n×4  872688 
n×5  1090860 
Division
n÷yn÷2  109086.000 

n÷3  72724.000 
n÷4  54543.000 
n÷5  43634.400 
Exponentiation
n^{y}n^{2}  47599021584 

n^{3}  10384773737024448 
n^{4}  2265666855754097869056 
n^{5}  494305069253583040287685632 
Nth Root
^{y}√n^{2}√n  467.08885664293 

^{3}√n  60.200440757177 
^{4}√n  21.612238584722 
^{5}√n  11.688527489625 
218172 as geometric shapes
Circle
Radius = nDiameter  436344 

Circumference  1370815.104838 
Area  149536736526.36 
Sphere
Radius = nVolume  4.3499638508571E+16 

Surface area  598146946105.43 
Circumference  1370815.104838 
Square
Length = nPerimeter  872688 

Area  47599021584 
Diagonal  308541.80133006 
Cube
Length = nSurface area  285594129504 

Volume  10384773737024448 
Space diagonal  377884.98878892 
Equilateral Triangle
Length = nPerimeter  654516 

Area  20610980943.514 
Altitude  188942.49439446 
Triangular Pyramid
Length = nSurface area  82443923774.056 

Volume  1.2238573217563E+15 
Height  178136.69205416 
Cryptographic Hash Functions
md5  ca13488f534a781309aaa6cbc21565ae 

sha1  d800108e3b01b21d3dabf25c17f1c45b2ddb52c4 
sha256  96cb936c7f89927fb4a402323a6fcc582a492937261acaab8e96cacab684a43b 
sha512  a42d3f6146e6e41c973d9695f6568e9a070d1ac32cb34863f75263b3b5d325b58e4152664a4db7235173f14e6480cfa55a448f5990db443dac3c88aa9e7a685d 
ripemd160  19e83ac8bb6726dc4bf9ac58bed9fe67ce73fb82 