79108820 has 96 divisors (see below), whose sum is σ = 205970688. Its totient is φ = 24901632.

The previous prime is 79108801. The next prime is 79108829. The reversal of 79108820 is 2880197.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79108829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101954 + ... + 102726.

It is an arithmetic number, because the mean of its divisors is an integer number (2145528).

Almost surely, 2^79108820 is an apocalyptic number.

79108820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79108820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102985344).

79108820 is an abundant number, since it is smaller than the sum of its proper divisors (126861868).

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

79108820 is a wasteful number, since it uses less digits than its factorization.

79108820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 79108820 is about 8894.3139139565. The cubic root of 79108820 is about 429.2809688738.

The spelling of 79108820 in words is "seventy-nine million, one hundred eight thousand, eight hundred twenty".