72734745 has 16 divisors (see below), whose sum is σ = 116603712. Its totient is φ = 38715840.

The previous prime is 72734729. The next prime is 72734777. The reversal of 72734745 is 54743727.

It is not a de Polignac number, because 72734745 - 2⁴ = 72734729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3634 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (7287732).

Almost surely, 2^72734745 is an apocalyptic number.

It is an amenable number.

72734745 is a deficient number, since it is larger than the sum of its proper divisors (43868967).

72734745 is a wasteful number, since it uses less digits than its factorization.

72734745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9512.

The product of its digits is 164640, while the sum is 39.

The square root of 72734745 is about 8528.4667437940. The cubic root of 72734745 is about 417.4270995140.

The spelling of 72734745 in words is "seventy-two million, seven hundred thirty-four thousand, seven hundred forty-five".