57728856 has 16 divisors (see below), whose sum is σ = 144322200. Its totient is φ = 19242944.

The previous prime is 57728791. The next prime is 57728857. The reversal of 57728856 is 65882775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202661 + ... + 1202708.

Almost surely, 2^57728856 is an apocalyptic number.

It is an amenable number.

57728856 is an abundant number, since it is smaller than the sum of its proper divisors (86593344).

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

57728856 is a wasteful number, since it uses less digits than its factorization.

57728856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405378 (or 2405374 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 57728856 is about 7597.9507763607. The cubic root of 57728856 is about 386.4835233888.

The spelling of 57728856 in words is "fifty-seven million, seven hundred twenty-eight thousand, eight hundred fifty-six".