57228648 has 32 divisors (see below), whose sum is σ = 143959200. Its totient is φ = 18957888.

The previous prime is 57228641. The next prime is 57228659. The reversal of 57228648 is 84682275.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57228641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3403 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (4498725).

Almost surely, 2^57228648 is an apocalyptic number.

It is an amenable number.

57228648 is an abundant number, since it is smaller than the sum of its proper divisors (86730552).

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

57228648 is a wasteful number, since it uses less digits than its factorization.

57228648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14801 (or 14797 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 57228648 is about 7564.9618637505. The cubic root of 57228648 is about 385.3640184480.

The spelling of 57228648 in words is "fifty-seven million, two hundred twenty-eight thousand, six hundred forty-eight".