72317332 has 12 divisors (see below), whose sum is σ = 126616000. Its totient is φ = 36141336.

The previous prime is 72317309. The next prime is 72317347. The reversal of 72317332 is 23371327.

It is a self number, because there is not a number n which added to its sum of digits gives 72317332.

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, 11413 + ... + 16579.

Almost surely, 2^72317332 is an apocalyptic number.

It is an amenable number.

72317332 is a deficient number, since it is larger than the sum of its proper divisors (54298668).

72317332 is a wasteful number, since it uses less digits than its factorization.

72317332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670 (or 8668 counting only the distinct ones).

The product of its digits is 5292, while the sum is 28.

The square root of 72317332 is about 8503.9597835361. The cubic root of 72317332 is about 416.6270514514.

Adding to 72317332 its reverse (23371327), we get a palindrome (95688659).

The spelling of 72317332 in words is "seventy-two million, three hundred seventeen thousand, three hundred thirty-two".