57728888 has 16 divisors (see below), whose sum is σ = 123704880. Its totient is φ = 24740928.

The previous prime is 57728857. The next prime is 57728947. The reversal of 57728888 is 88882775.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515381 + ... + 515492.

It is an arithmetic number, because the mean of its divisors is an integer number (7731555).

Almost surely, 2^57728888 is an apocalyptic number.

It is an amenable number.

57728888 is an abundant number, since it is smaller than the sum of its proper divisors (65975992).

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

57728888 is a wasteful number, since it uses less digits than its factorization.

57728888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030886 (or 1030882 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 53.

The square root of 57728888 is about 7597.9528821914. The cubic root of 57728888 is about 386.4835948000.

The spelling of 57728888 in words is "fifty-seven million, seven hundred twenty-eight thousand, eight hundred eighty-eight".