72969836 has 12 divisors (see below), whose sum is σ = 127916712. Its totient is φ = 36422208.

The previous prime is 72969781. The next prime is 72969859. The reversal of 72969836 is 63896927.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13010 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (10659726).

Almost surely, 2^72969836 is an apocalyptic number.

It is an amenable number.

72969836 is a deficient number, since it is larger than the sum of its proper divisors (54946876).

72969836 is a wasteful number, since it uses less digits than its factorization.

72969836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31360 (or 31358 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 72969836 is about 8542.2383483488. The cubic root of 72969836 is about 417.8763475125.

The spelling of 72969836 in words is "seventy-two million, nine hundred sixty-nine thousand, eight hundred thirty-six".