72989424 has 60 divisors (see below), whose sum is σ = 211845816. Its totient is φ = 24328512.

The previous prime is 72989417. The next prime is 72989429. The reversal of 72989424 is 42498927.

It is a self number, because there is not a number n which added to its sum of digits gives 72989424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72989429) 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, 5499 + ... + 13274.

Almost surely, 2^72989424 is an apocalyptic number.

It is an amenable number.

72989424 is an abundant number, since it is smaller than the sum of its proper divisors (138856392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72989424 is a wasteful number, since it uses less digits than its factorization.

72989424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18796 (or 18778 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 72989424 is about 8543.3848093130. The cubic root of 72989424 is about 417.9137356993.

The spelling of 72989424 in words is "seventy-two million, nine hundred eighty-nine thousand, four hundred twenty-four".