79397520 has 40 divisors (see below), whose sum is σ = 246133056. Its totient is φ = 21172608.

The previous prime is 79397503. The next prime is 79397557. The reversal of 79397520 is 2579397.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165172 + ... + 165651.

Almost surely, 2^79397520 is an apocalyptic number.

It is an amenable number.

79397520 is an abundant number, since it is smaller than the sum of its proper divisors (166735536).

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

79397520 is a wasteful number, since it uses less digits than its factorization.

79397520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330839 (or 330833 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 79397520 is about 8910.5286038484. The cubic root of 79397520 is about 429.8025413931.

The spelling of 79397520 in words is "seventy-nine million, three hundred ninety-seven thousand, five hundred twenty".