72660288 has 28 divisors (see below), whose sum is σ = 192247520. Its totient is φ = 24220032.

The previous prime is 72660271. The next prime is 72660293. The reversal of 72660288 is 88206627.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 189028 + ... + 189411.

Almost surely, 2^72660288 is an apocalyptic number.

It is an amenable number.

72660288 is an abundant number, since it is smaller than the sum of its proper divisors (119587232).

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

72660288 is a wasteful number, since it uses less digits than its factorization.

72660288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378454 (or 378444 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 72660288 is about 8524.1004217454. The cubic root of 72660288 is about 417.2846138239.

The spelling of 72660288 in words is "seventy-two million, six hundred sixty thousand, two hundred eighty-eight".