57023388 has 36 divisors (see below), whose sum is σ = 145578888. Its totient is φ = 18818400.

The previous prime is 57023387. The next prime is 57023399. The reversal of 57023388 is 88332075.

57023388 is a `hidden beast` number, since 570 + 2 + 3 + 3 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57023387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4206 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (4043858).

Almost surely, 2^57023388 is an apocalyptic number.

It is an amenable number.

57023388 is an abundant number, since it is smaller than the sum of its proper divisors (88555500).

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

57023388 is a wasteful number, since it uses less digits than its factorization.

57023388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15794 (or 15789 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 57023388 is about 7551.3831845563. The cubic root of 57023388 is about 384.9027426228.

The spelling of 57023388 in words is "fifty-seven million, twenty-three thousand, three hundred eighty-eight".