56405328 has 40 divisors (see below), whose sum is σ = 166531008. Its totient is φ = 16115712.

The previous prime is 56405317. The next prime is 56405333. The reversal of 56405328 is 82350465.

56405328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56405328² = 6363122053575168, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83601 + ... + 84272.

Almost surely, 2^56405328 is an apocalyptic number.

It is an amenable number.

56405328 is an abundant number, since it is smaller than the sum of its proper divisors (110125680).

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

56405328 is a wasteful number, since it uses less digits than its factorization.

56405328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167891 (or 167885 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 56405328 is about 7510.3480611753. The cubic root of 56405328 is about 383.5070715073.

The spelling of 56405328 in words is "fifty-six million, four hundred five thousand, three hundred twenty-eight".