57311428 has 6 divisors (see below), whose sum is σ = 100295006. Its totient is φ = 28655712.

The previous prime is 57311407. The next prime is 57311459. The reversal of 57311428 is 82411375.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 6160324 = 7152^2 + 2482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57311428.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7163925 + ... + 7163932.

Almost surely, 2^57311428 is an apocalyptic number.

It is an amenable number.

57311428 is a deficient number, since it is larger than the sum of its proper divisors (42983578).

57311428 is a wasteful number, since it uses less digits than its factorization.

57311428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327861 (or 14327859 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 57311428 is about 7570.4311634147. The cubic root of 57311428 is about 385.5497358338.

The spelling of 57311428 in words is "fifty-seven million, three hundred eleven thousand, four hundred twenty-eight".