72124924 has 24 divisors (see below), whose sum is σ = 128671200. Its totient is φ = 35367360.

The previous prime is 72124901. The next prime is 72124939. The reversal of 72124924 is 42942127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64482 + ... + 65590.

It is an arithmetic number, because the mean of its divisors is an integer number (5361300).

Almost surely, 2^72124924 is an apocalyptic number.

It is an amenable number.

72124924 is a deficient number, since it is larger than the sum of its proper divisors (56546276).

72124924 is a wasteful number, since it uses less digits than its factorization.

72124924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1411 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 72124924 is about 8492.6394012698. The cubic root of 72124924 is about 416.2572296568.

The spelling of 72124924 in words is "seventy-two million, one hundred twenty-four thousand, nine hundred twenty-four".