79227720 has 448 divisors, whose sum is σ = 330523200. Its totient is φ = 16796160.

The previous prime is 79227697. The next prime is 79227749. The reversal of 79227720 is 2772297.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 4169871 + ... + 4169889.

It is an arithmetic number, because the mean of its divisors is an integer number (737775).

Almost surely, 2^79227720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79227720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165261600).

79227720 is an abundant number, since it is smaller than the sum of its proper divisors (251295480).

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

79227720 is a wasteful number, since it uses less digits than its factorization.

79227720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 79227720 is about 8900.9954499483. The cubic root of 79227720 is about 429.4959299736.

It can be divided in two parts, 792277 and 20, that added together give a palindrome (792297).

The spelling of 79227720 in words is "seventy-nine million, two hundred twenty-seven thousand, seven hundred twenty".