57728796 has 12 divisors (see below), whose sum is σ = 134700552. Its totient is φ = 19242928.

The previous prime is 57728791. The next prime is 57728857. The reversal of 57728796 is 69782775.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×57728796² = 6665227775219232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728791) 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, 2405355 + ... + 2405378.

It is an arithmetic number, because the mean of its divisors is an integer number (11225046).

Almost surely, 2^57728796 is an apocalyptic number.

It is an amenable number.

57728796 is an abundant number, since it is smaller than the sum of its proper divisors (76971756).

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

57728796 is a wasteful number, since it uses less digits than its factorization.

57728796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810740 (or 4810738 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 51.

The square root of 57728796 is about 7597.9468279266. The cubic root of 57728796 is about 386.4833894926.

The spelling of 57728796 in words is "fifty-seven million, seven hundred twenty-eight thousand, seven hundred ninety-six".