57427820 has 12 divisors (see below), whose sum is σ = 120598464. Its totient is φ = 22971120.

The previous prime is 57427817. The next prime is 57427829. The reversal of 57427820 is 2872475.

It is not an unprimeable number, because it can be changed into a prime (57427829) 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, 1435676 + ... + 1435715.

It is an arithmetic number, because the mean of its divisors is an integer number (10049872).

Almost surely, 2^57427820 is an apocalyptic number.

It is an amenable number.

57427820 is an abundant number, since it is smaller than the sum of its proper divisors (63170644).

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

57427820 is a wasteful number, since it uses less digits than its factorization.

57427820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871400 (or 2871398 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 57427820 is about 7578.1145412299. The cubic root of 57427820 is about 385.8105596770.

The spelling of 57427820 in words is "fifty-seven million, four hundred twenty-seven thousand, eight hundred twenty".