57222928 has 20 divisors (see below), whose sum is σ = 126708160. Its totient is φ = 24524064.

The previous prime is 57222917. The next prime is 57222953. The reversal of 57222928 is 82922275.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255348 + ... + 255571.

It is an arithmetic number, because the mean of its divisors is an integer number (6335408).

Almost surely, 2^57222928 is an apocalyptic number.

It is an amenable number.

57222928 is an abundant number, since it is smaller than the sum of its proper divisors (69485232).

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

57222928 is a wasteful number, since it uses less digits than its factorization.

57222928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510934 (or 510928 counting only the distinct ones).

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

The square root of 57222928 is about 7564.5837955568. The cubic root of 57222928 is about 385.3511789833.

The spelling of 57222928 in words is "fifty-seven million, two hundred twenty-two thousand, nine hundred twenty-eight".