72408764 has 12 divisors (see below), whose sum is σ = 129411744. Its totient is φ = 35433984.

The previous prime is 72408757. The next prime is 72408767. The reversal of 72408764 is 46780427.

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 not an unprimeable number, because it can be changed into a prime (72408767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192389 + ... + 192764.

It is an arithmetic number, because the mean of its divisors is an integer number (10784312).

Almost surely, 2^72408764 is an apocalyptic number.

It is an amenable number.

72408764 is a deficient number, since it is larger than the sum of its proper divisors (57002980).

72408764 is a wasteful number, since it uses less digits than its factorization.

72408764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385204 (or 385202 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 72408764 is about 8509.3339339810. Note that the first 3 decimals coincide. The cubic root of 72408764 is about 416.8025603319.

The spelling of 72408764 in words is "seventy-two million, four hundred eight thousand, seven hundred sixty-four".