56928172 has 48 divisors (see below), whose sum is σ = 123536448. Its totient is φ = 22394880.

The previous prime is 56928169. The next prime is 56928187. The reversal of 56928172 is 27182965.

It is a super-3 number, since 3×56928172³ (a number of 24 digits) contains 333 as substring.

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, 18058 + ... + 20974.

It is an arithmetic number, because the mean of its divisors is an integer number (2573676).

Almost surely, 2^56928172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56928172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61768224).

56928172 is an abundant number, since it is smaller than the sum of its proper divisors (66608276).

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

56928172 is a wasteful number, since it uses less digits than its factorization.

56928172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2984 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 56928172 is about 7545.0760102202. The cubic root of 56928172 is about 384.6883901252.

The spelling of 56928172 in words is "fifty-six million, nine hundred twenty-eight thousand, one hundred seventy-two".