57198020 has 24 divisors (see below), whose sum is σ = 131035968. Its totient is φ = 20799200.

The previous prime is 57198019. The next prime is 57198023. The reversal of 57198020 is 2089175.

It is a super-2 number, since 2×57198020² = 6543226983840800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57198023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129776 + ... + 130215.

It is an arithmetic number, because the mean of its divisors is an integer number (5459832).

Almost surely, 2^57198020 is an apocalyptic number.

It is an amenable number.

57198020 is an abundant number, since it is smaller than the sum of its proper divisors (73837948).

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

57198020 is a wasteful number, since it uses less digits than its factorization.

57198020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260011 (or 260009 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 57198020 is about 7562.9372600862. The cubic root of 57198020 is about 385.2952589730.

The spelling of 57198020 in words is "fifty-seven million, one hundred ninety-eight thousand, twenty".