57906228 has 24 divisors (see below), whose sum is σ = 136967488. Its totient is φ = 19037376.

The previous prime is 57906223. The next prime is 57906241. The reversal of 57906228 is 82260975.

It is a happy number.

57906228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57906223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32176 + ... + 33927.

Almost surely, 2^57906228 is an apocalyptic number.

It is an amenable number.

57906228 is an abundant number, since it is smaller than the sum of its proper divisors (79061260).

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

57906228 is a wasteful number, since it uses less digits than its factorization.

57906228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66183 (or 66181 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 57906228 is about 7609.6141820726. The cubic root of 57906228 is about 386.8789424322.

The spelling of 57906228 in words is "fifty-seven million, nine hundred six thousand, two hundred twenty-eight".