72884745 has 32 divisors (see below), whose sum is σ = 130272000. Its totient is φ = 38662272.

The previous prime is 72884737. The next prime is 72884759. The reversal of 72884745 is 54748827.

It is not a de Polignac number, because 72884745 - 2³ = 72884737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 72884745.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25509 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (4071000).

Almost surely, 2^72884745 is an apocalyptic number.

It is an amenable number.

72884745 is a deficient number, since it is larger than the sum of its proper divisors (57387255).

72884745 is a wasteful number, since it uses less digits than its factorization.

72884745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926 (or 2920 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 72884745 is about 8537.2562922756. The cubic root of 72884745 is about 417.7138541292.

The spelling of 72884745 in words is "seventy-two million, eight hundred eighty-four thousand, seven hundred forty-five".