57028464 has 30 divisors (see below), whose sum is σ = 159600896. Its totient is φ = 19009440.

The previous prime is 57028429. The next prime is 57028469. The reversal of 57028464 is 46482075.

57028464 is a `hidden beast` number, since 570 + 2 + 84 + 6 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57028469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197872 + ... + 198159.

Almost surely, 2^57028464 is an apocalyptic number.

It is an amenable number.

57028464 is an abundant number, since it is smaller than the sum of its proper divisors (102572432).

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

57028464 is a wasteful number, since it uses less digits than its factorization.

57028464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396045 (or 396036 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 57028464 is about 7551.7192744434. The cubic root of 57028464 is about 384.9141631318.

The spelling of 57028464 in words is "fifty-seven million, twenty-eight thousand, four hundred sixty-four".