72717316 has 12 divisors (see below), whose sum is σ = 145434688. Its totient is φ = 31164552.

The previous prime is 72717287. The next prime is 72717317. The reversal of 72717316 is 61371727.

72717316 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (72717317) 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, 1298496 + ... + 1298551.

Almost surely, 2^72717316 is an apocalyptic number.

It is an amenable number.

72717316 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.

72717316 is a wasteful number, since it uses less digits than its factorization.

72717316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597058 (or 2597056 counting only the distinct ones).

The product of its digits is 12348, while the sum is 34.

The square root of 72717316 is about 8527.4448693615. Note that the first 3 decimals coincide. The cubic root of 72717316 is about 417.3937549820.

The spelling of 72717316 in words is "seventy-two million, seven hundred seventeen thousand, three hundred sixteen".