79216920 has 128 divisors (see below), whose sum is σ = 270648000. Its totient is φ = 20597760.

The previous prime is 79216919. The next prime is 79216933. The reversal of 79216920 is 2961297.

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 31 ways as a sum of consecutive naturals, for example, 43386 + ... + 45174.

Almost surely, 2^79216920 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 79216920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135324000).

79216920 is an abundant number, since it is smaller than the sum of its proper divisors (191431080).

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

79216920 is a wasteful number, since it uses less digits than its factorization.

79216920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 79216920 is about 8900.3887555544. The cubic root of 79216920 is about 429.4764133750.

It can be divided in two parts, 7921 and 6920, that added together give a palindrome (14841).

The spelling of 79216920 in words is "seventy-nine million, two hundred sixteen thousand, nine hundred twenty".