57428668 has 24 divisors (see below), whose sum is σ = 109912320. Its totient is φ = 26038320.

The previous prime is 57428641. The next prime is 57428681. The reversal of 57428668 is 86682475.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18963 + ... + 21781.

It is an arithmetic number, because the mean of its divisors is an integer number (4579680).

Almost surely, 2^57428668 is an apocalyptic number.

It is an amenable number.

57428668 is a deficient number, since it is larger than the sum of its proper divisors (52483652).

57428668 is a wasteful number, since it uses less digits than its factorization.

57428668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297 (or 3295 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 57428668 is about 7578.1704916160. The cubic root of 57428668 is about 385.8124586739.

The spelling of 57428668 in words is "fifty-seven million, four hundred twenty-eight thousand, six hundred sixty-eight".