57286980 has 48 divisors (see below), whose sum is σ = 178227840. Its totient is φ = 15276384.

The previous prime is 57286979. The next prime is 57286993. The reversal of 57286980 is 8968275.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52504 + ... + 53583.

It is an arithmetic number, because the mean of its divisors is an integer number (3713080).

Almost surely, 2^57286980 is an apocalyptic number.

It is an amenable number.

57286980 is an abundant number, since it is smaller than the sum of its proper divisors (120940860).

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

57286980 is a wasteful number, since it uses less digits than its factorization.

57286980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106105 (or 106097 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 57286980 is about 7568.8162879013. The cubic root of 57286980 is about 385.4949052302.

The spelling of 57286980 in words is "fifty-seven million, two hundred eighty-six thousand, nine hundred eighty".