57142860 has 24 divisors (see below), whose sum is σ = 160000176. Its totient is φ = 15238080.

The previous prime is 57142853. The next prime is 57142907. The reversal of 57142860 is 6824175.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476131 + ... + 476250.

It is an arithmetic number, because the mean of its divisors is an integer number (6666674).

Almost surely, 2^57142860 is an apocalyptic number.

It is an amenable number.

57142860 is an abundant number, since it is smaller than the sum of its proper divisors (102857316).

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

57142860 is a wasteful number, since it uses less digits than its factorization.

57142860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952393 (or 952391 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 57142860 is about 7559.2896491668. The cubic root of 57142860 is about 385.1713635304.

The spelling of 57142860 in words is "fifty-seven million, one hundred forty-two thousand, eight hundred sixty".