57262780 has 12 divisors (see below), whose sum is σ = 120251880. Its totient is φ = 22905104.

The previous prime is 57262769. The next prime is 57262781. The reversal of 57262780 is 8726275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57262781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431550 + ... + 1431589.

It is an arithmetic number, because the mean of its divisors is an integer number (10020990).

Almost surely, 2^57262780 is an apocalyptic number.

It is an amenable number.

57262780 is an abundant number, since it is smaller than the sum of its proper divisors (62989100).

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

57262780 is a wasteful number, since it uses less digits than its factorization.

57262780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863148 (or 2863146 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 57262780 is about 7567.2174542562. The cubic root of 57262780 is about 385.4406154618.

The spelling of 57262780 in words is "fifty-seven million, two hundred sixty-two thousand, seven hundred eighty".