72591672 has 16 divisors (see below), whose sum is σ = 181479240. Its totient is φ = 24197216.

The previous prime is 72591671. The next prime is 72591691. The reversal of 72591672 is 27619527.

It is a self number, because there is not a number n which added to its sum of digits gives 72591672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72591671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512303 + ... + 1512350.

Almost surely, 2^72591672 is an apocalyptic number.

It is an amenable number.

72591672 is an abundant number, since it is smaller than the sum of its proper divisors (108887568).

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

72591672 is a wasteful number, since it uses less digits than its factorization.

72591672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024662 (or 3024658 counting only the distinct ones).

The product of its digits is 52920, while the sum is 39.

The square root of 72591672 is about 8520.0746475603. The cubic root of 72591672 is about 417.1532196355.

The spelling of 72591672 in words is "seventy-two million, five hundred ninety-one thousand, six hundred seventy-two".