57142872 has 48 divisors (see below), whose sum is σ = 158369640. Its totient is φ = 18603648.

The previous prime is 57142853. The next prime is 57142907. The reversal of 57142872 is 27824175.

57142872 is a `hidden beast` number, since 571 + 4 + 2 + 87 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6133 + ... + 12324.

Almost surely, 2^57142872 is an apocalyptic number.

It is an amenable number.

57142872 is an abundant number, since it is smaller than the sum of its proper divisors (101226768).

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

57142872 is a wasteful number, since it uses less digits than its factorization.

57142872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512 (or 18505 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 57142872 is about 7559.2904428921. The cubic root of 57142872 is about 385.1713904924.

The spelling of 57142872 in words is "fifty-seven million, one hundred forty-two thousand, eight hundred seventy-two".