72912368 has 20 divisors (see below), whose sum is σ = 142591320. Its totient is φ = 36114624.

The previous prime is 72912353. The next prime is 72912379. The reversal of 72912368 is 86321927.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 19583 + ... + 23006.

It is an arithmetic number, because the mean of its divisors is an integer number (7129566).

Almost surely, 2^72912368 is an apocalyptic number.

It is an amenable number.

72912368 is a deficient number, since it is larger than the sum of its proper divisors (69678952).

72912368 is a wasteful number, since it uses less digits than its factorization.

72912368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42704 (or 42698 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 72912368 is about 8538.8739304431. The cubic root of 72912368 is about 417.7666180393.

The spelling of 72912368 in words is "seventy-two million, nine hundred twelve thousand, three hundred sixty-eight".