57072888 has 24 divisors (see below), whose sum is σ = 154572600. Its totient is φ = 19024272.

The previous prime is 57072887. The next prime is 57072929. The reversal of 57072888 is 88827075.

It is a happy number.

57072888 is a `hidden beast` number, since 570 + 72 + 8 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396268 + ... + 396411.

It is an arithmetic number, because the mean of its divisors is an integer number (6440525).

Almost surely, 2^57072888 is an apocalyptic number.

It is an amenable number.

57072888 is an abundant number, since it is smaller than the sum of its proper divisors (97499712).

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

57072888 is a wasteful number, since it uses less digits than its factorization.

57072888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792691 (or 792684 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 57072888 is about 7554.6600188228. The cubic root of 57072888 is about 385.0140839285.

The spelling of 57072888 in words is "fifty-seven million, seventy-two thousand, eight hundred eighty-eight".