57242980 has 48 divisors (see below), whose sum is σ = 123480000. Its totient is φ = 22283136.

The previous prime is 57242849. The next prime is 57242981. The reversal of 57242980 is 8924275.

It is not an unprimeable number, because it can be changed into a prime (57242981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163846 + ... + 164194.

It is an arithmetic number, because the mean of its divisors is an integer number (2572500).

Almost surely, 2^57242980 is an apocalyptic number.

It is an amenable number.

57242980 is an abundant number, since it is smaller than the sum of its proper divisors (66237020).

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

57242980 is a wasteful number, since it uses less digits than its factorization.

57242980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 57242980 is about 7565.9090663317. The cubic root of 57242980 is about 385.3961851822.

The spelling of 57242980 in words is "fifty-seven million, two hundred forty-two thousand, nine hundred eighty".