57428128 has 24 divisors (see below), whose sum is σ = 113883840. Its totient is φ = 28505280.

The previous prime is 57428123. The next prime is 57428143. The reversal of 57428128 is 82182475.

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 not an unprimeable number, because it can be changed into a prime (57428123) 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, 2008 + ... + 10903.

It is an arithmetic number, because the mean of its divisors is an integer number (4745160).

Almost surely, 2^57428128 is an apocalyptic number.

It is an amenable number.

57428128 is a deficient number, since it is larger than the sum of its proper divisors (56455712).

57428128 is a wasteful number, since it uses less digits than its factorization.

57428128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13060 (or 13052 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 57428128 is about 7578.1348628802. The cubic root of 57428128 is about 385.8112494092.

The spelling of 57428128 in words is "fifty-seven million, four hundred twenty-eight thousand, one hundred twenty-eight".