57728816 has 10 divisors (see below), whose sum is σ = 111849612. Its totient is φ = 28864400.

The previous prime is 57728791. The next prime is 57728857. The reversal of 57728816 is 61882775.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804010 + ... + 1804041.

Almost surely, 2^57728816 is an apocalyptic number.

It is an amenable number.

57728816 is a deficient number, since it is larger than the sum of its proper divisors (54120796).

57728816 is a wasteful number, since it uses less digits than its factorization.

57728816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608059 (or 3608053 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 57728816 is about 7597.9481440715. The cubic root of 57728816 is about 386.4834341247.

The spelling of 57728816 in words is "fifty-seven million, seven hundred twenty-eight thousand, eight hundred sixteen".