72324737 has 12 divisors (see below), whose sum is σ = 74785920. Its totient is φ = 69931992.

The previous prime is 72324713. The next prime is 72324739. The reversal of 72324737 is 73742327.

It is not a de Polignac number, because 72324737 - 2¹² = 72320641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72324697 and 72324706.

It is not an unprimeable number, because it can be changed into a prime (72324739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274868 + ... + 275130.

It is an arithmetic number, because the mean of its divisors is an integer number (6232160).

Almost surely, 2^72324737 is an apocalyptic number.

It is an amenable number.

72324737 is a deficient number, since it is larger than the sum of its proper divisors (2461183).

72324737 is an equidigital number, since it uses as much as digits as its factorization.

72324737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 401 counting only the distinct ones).

The product of its digits is 49392, while the sum is 35.

The square root of 72324737 is about 8504.3951577993. The cubic root of 72324737 is about 416.6412712700.

The spelling of 72324737 in words is "seventy-two million, three hundred twenty-four thousand, seven hundred thirty-seven".