57028872 has 16 divisors (see below), whose sum is σ = 142572240. Its totient is φ = 19009616.

The previous prime is 57028817. The next prime is 57028903. The reversal of 57028872 is 27882075.

It is a self number, because there is not a number n which added to its sum of digits gives 57028872.

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, 1188078 + ... + 1188125.

It is an arithmetic number, because the mean of its divisors is an integer number (8910765).

Almost surely, 2^57028872 is an apocalyptic number.

It is an amenable number.

57028872 is an abundant number, since it is smaller than the sum of its proper divisors (85543368).

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

57028872 is a wasteful number, since it uses less digits than its factorization.

57028872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376212 (or 2376208 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 57028872 is about 7551.7462881111. The cubic root of 57028872 is about 384.9150810629.

The spelling of 57028872 in words is "fifty-seven million, twenty-eight thousand, eight hundred seventy-two".