172618140 has 48 divisors (see below), whose sum is σ = 484821792. Its totient is φ = 45889536.

The previous prime is 172618109. The next prime is 172618157. The reversal of 172618140 is 41816271.

172618140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 172618098 and 172618107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15952 + ... + 24488.

It is an arithmetic number, because the mean of its divisors is an integer number (10100454).

Almost surely, 2^172618140 is an apocalyptic number.

172618140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172618140 is an abundant number, since it is smaller than the sum of its proper divisors (312203652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172618140 is a wasteful number, since it uses less digits than its factorization.

172618140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8886 (or 8884 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 172618140 is about 13138.4222797108. The cubic root of 172618140 is about 556.7951934492.

The spelling of 172618140 in words is "one hundred seventy-two million, six hundred eighteen thousand, one hundred forty".