56688128 has 40 divisors (see below), whose sum is σ = 129454512. Its totient is φ = 24293376.

The previous prime is 56688103. The next prime is 56688133. The reversal of 56688128 is 82188665.

It is a super-2 number, since 2×56688128² = 6427087712288768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325 + ... + 11492.

Almost surely, 2^56688128 is an apocalyptic number.

It is an amenable number.

56688128 is an abundant number, since it is smaller than the sum of its proper divisors (72766384).

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

56688128 is an equidigital number, since it uses as much as digits as its factorization.

56688128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842 (or 15826 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 56688128 is about 7529.1518778678. The cubic root of 56688128 is about 384.1469345103.

The spelling of 56688128 in words is "fifty-six million, six hundred eighty-eight thousand, one hundred twenty-eight".