56928920 has 32 divisors (see below), whose sum is σ = 135626400. Its totient is φ = 21431808.

The previous prime is 56928919. The next prime is 56928931. The reversal of 56928920 is 2982965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41180 + ... + 42539.

It is an arithmetic number, because the mean of its divisors is an integer number (4238325).

Almost surely, 2^56928920 is an apocalyptic number.

It is an amenable number.

56928920 is an abundant number, since it is smaller than the sum of its proper divisors (78697480).

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

56928920 is a wasteful number, since it uses less digits than its factorization.

56928920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83747 (or 83743 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 56928920 is about 7545.1255788091. The cubic root of 56928920 is about 384.6900749715.

The spelling of 56928920 in words is "fifty-six million, nine hundred twenty-eight thousand, nine hundred twenty".