79731216 has 60 divisors (see below), whose sum is σ = 231412272. Its totient is φ = 26575776.

The previous prime is 79731199. The next prime is 79731217. The reversal of 79731216 is 61213797.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (79731217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6366 + ... + 14141.

Almost surely, 2^79731216 is an apocalyptic number.

It is an amenable number.

79731216 is an abundant number, since it is smaller than the sum of its proper divisors (151681056).

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

79731216 is a wasteful number, since it uses less digits than its factorization.

79731216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20530 (or 20512 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 79731216 is about 8929.2337857176. The cubic root of 79731216 is about 430.4038319103.

The spelling of 79731216 in words is "seventy-nine million, seven hundred thirty-one thousand, two hundred sixteen".