57113920 has 28 divisors (see below), whose sum is σ = 136003284. Its totient is φ = 22845440.

The previous prime is 57113909. The next prime is 57113923. The reversal of 57113920 is 2931175.

It can be written as a sum of positive squares in 2 ways, for example, as 24760576 + 32353344 = 4976^2 + 5688^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57113923) 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, 88921 + ... + 89560.

Almost surely, 2^57113920 is an apocalyptic number.

It is an amenable number.

57113920 is an abundant number, since it is smaller than the sum of its proper divisors (78889364).

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

57113920 is a wasteful number, since it uses less digits than its factorization.

57113920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178498 (or 178488 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 57113920 is about 7557.3752057179. The cubic root of 57113920 is about 385.1063292078.

The spelling of 57113920 in words is "fifty-seven million, one hundred thirteen thousand, nine hundred twenty".