79720368 has 80 divisors (see below), whose sum is σ = 253483776. Its totient is φ = 21024000.

The previous prime is 79720349. The next prime is 79720373. The reversal of 79720368 is 86302797.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4758 + ... + 13493.

Almost surely, 2^79720368 is an apocalyptic number.

79720368 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

79720368 is an abundant number, since it is smaller than the sum of its proper divisors (173763408).

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

79720368 is a wasteful number, since it uses less digits than its factorization.

79720368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282 (or 18276 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 79720368 is about 8928.6263221170. The cubic root of 79720368 is about 430.3843111891.

The spelling of 79720368 in words is "seventy-nine million, seven hundred twenty thousand, three hundred sixty-eight".