72733916 has 12 divisors (see below), whose sum is σ = 128287488. Its totient is φ = 36080352.

The previous prime is 72733909. The next prime is 72733931. The reversal of 72733916 is 61933727.

It is a self number, because there is not a number n which added to its sum of digits gives 72733916.

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, 71081 + ... + 72096.

It is an arithmetic number, because the mean of its divisors is an integer number (10690624).

Almost surely, 2^72733916 is an apocalyptic number.

It is an amenable number.

72733916 is a deficient number, since it is larger than the sum of its proper divisors (55553572).

72733916 is a wasteful number, since it uses less digits than its factorization.

72733916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143308 (or 143306 counting only the distinct ones).

The product of its digits is 47628, while the sum is 38.

The square root of 72733916 is about 8528.4181417189. The cubic root of 72733916 is about 417.4255136219.

It can be divided in two parts, 727 and 33916, that added together give a palindrome (34643).

The spelling of 72733916 in words is "seventy-two million, seven hundred thirty-three thousand, nine hundred sixteen".