72969988 has 24 divisors (see below), whose sum is σ = 157166912. Its totient is φ = 28867104.

The previous prime is 72969979. The next prime is 72970033. The reversal of 72969988 is 88996927.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99870 + ... + 100597.

Almost surely, 2^72969988 is an apocalyptic number.

It is an amenable number.

72969988 is an abundant number, since it is smaller than the sum of its proper divisors (84196924).

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

72969988 is a wasteful number, since it uses less digits than its factorization.

72969988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200491 (or 200489 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 58.

The square root of 72969988 is about 8542.2472453096. The cubic root of 72969988 is about 417.8766376651.

The spelling of 72969988 in words is "seventy-two million, nine hundred sixty-nine thousand, nine hundred eighty-eight".