57228232 has 64 divisors (see below), whose sum is σ = 117964800. Its totient is φ = 25945920.

The previous prime is 57228173. The next prime is 57228253. The reversal of 57228232 is 23282275.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 57228194 and 57228203.

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, 450553 + ... + 450679.

It is an arithmetic number, because the mean of its divisors is an integer number (1843200).

Almost surely, 2^57228232 is an apocalyptic number.

It is an amenable number.

57228232 is an abundant number, since it is smaller than the sum of its proper divisors (60736568).

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

57228232 is a wasteful number, since it uses less digits than its factorization.

57228232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 262 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 57228232 is about 7564.9343685190. The cubic root of 57228232 is about 385.3630846976.

The spelling of 57228232 in words is "fifty-seven million, two hundred twenty-eight thousand, two hundred thirty-two".