56165728 has 12 divisors (see below), whose sum is σ = 110576340. Its totient is φ = 28082848.

The previous prime is 56165723. The next prime is 56165749. The reversal of 56165728 is 82756165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56165723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877558 + ... + 877621.

It is an arithmetic number, because the mean of its divisors is an integer number (9214695).

Almost surely, 2^56165728 is an apocalyptic number.

It is an amenable number.

56165728 is a deficient number, since it is larger than the sum of its proper divisors (54410612).

56165728 is a wasteful number, since it uses less digits than its factorization.

56165728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755189 (or 1755181 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 56165728 is about 7494.3797608608. The cubic root of 56165728 is about 382.9632770704.

The spelling of 56165728 in words is "fifty-six million, one hundred sixty-five thousand, seven hundred twenty-eight".