56458728 has 64 divisors (see below), whose sum is σ = 165096000. Its totient is φ = 17827776.

The previous prime is 56458691. The next prime is 56458757. The reversal of 56458728 is 82785465.

56458728 is a `hidden beast` number, since 5 + 64 + 587 + 2 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775 + ... + 10982.

It is an arithmetic number, because the mean of its divisors is an integer number (2579625).

Almost surely, 2^56458728 is an apocalyptic number.

It is an amenable number.

56458728 is an abundant number, since it is smaller than the sum of its proper divisors (108637272).

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

56458728 is a wasteful number, since it uses less digits than its factorization.

56458728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791 (or 13781 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 56458728 is about 7513.9023150424. The cubic root of 56458728 is about 383.6280578221.

The spelling of 56458728 in words is "fifty-six million, four hundred fifty-eight thousand, seven hundred twenty-eight".