57116728 has 32 divisors (see below), whose sum is σ = 114364800. Its totient is φ = 26677728.

The previous prime is 57116723. The next prime is 57116777. The reversal of 57116728 is 82761175.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57116723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (3573900).

Almost surely, 2^57116728 is an apocalyptic number.

It is an amenable number.

57116728 is an abundant number, since it is smaller than the sum of its proper divisors (57248072).

57116728 is a wasteful number, since it uses less digits than its factorization.

57116728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291 (or 7287 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 57116728 is about 7557.5609822217. The cubic root of 57116728 is about 385.1126403421.

The spelling of 57116728 in words is "fifty-seven million, one hundred sixteen thousand, seven hundred twenty-eight".