72057188 has 12 divisors (see below), whose sum is σ = 144114432. Its totient is φ = 30881640.

The previous prime is 72057179. The next prime is 72057217. The reversal of 72057188 is 88175027.

72057188 is an admirable number.

It is a super-3 number, since 3×72057188³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286708 + ... + 1286763.

It is an arithmetic number, because the mean of its divisors is an integer number (12009536).

Almost surely, 2^72057188 is an apocalyptic number.

It is an amenable number.

72057188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72057188 is a wasteful number, since it uses less digits than its factorization.

72057188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573482 (or 2573480 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 72057188 is about 8488.6505405748. The cubic root of 72057188 is about 416.1268797520.

The spelling of 72057188 in words is "seventy-two million, fifty-seven thousand, one hundred eighty-eight".