79431264 has 72 divisors (see below), whose sum is σ = 246427272. Its totient is φ = 24069120.

The previous prime is 79431257. The next prime is 79431271. The reversal of 79431264 is 46213497.

It is an interprime number because it is at equal distance from previous prime (79431257) and next prime (79431271).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9369 + ... + 15704.

It is an arithmetic number, because the mean of its divisors is an integer number (3422601).

Almost surely, 2^79431264 is an apocalyptic number.

It is an amenable number.

79431264 is an abundant number, since it is smaller than the sum of its proper divisors (166996008).

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

79431264 is a wasteful number, since it uses less digits than its factorization.

79431264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25100 (or 25089 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 79431264 is about 8912.4218930659. The cubic root of 79431264 is about 429.8634215600.

The spelling of 79431264 in words is "seventy-nine million, four hundred thirty-one thousand, two hundred sixty-four".