56393904 has 60 divisors (see below), whose sum is σ = 169476504. Its totient is φ = 16111872.

The previous prime is 56393903. The next prime is 56393923. The reversal of 56393904 is 40939365.

It is a super-2 number, since 2×56393904² = 6360544816722432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56393903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9637 + ... + 14340.

Almost surely, 2^56393904 is an apocalyptic number.

It is an amenable number.

56393904 is an abundant number, since it is smaller than the sum of its proper divisors (113082600).

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

56393904 is a wasteful number, since it uses less digits than its factorization.

56393904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24002 (or 23989 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 56393904 is about 7509.5874720253. The cubic root of 56393904 is about 383.4811786779.

The spelling of 56393904 in words is "fifty-six million, three hundred ninety-three thousand, nine hundred four".