79109520 has 240 divisors, whose sum is σ = 295516800. Its totient is φ = 17498880.

The previous prime is 79109509. The next prime is 79109543. The reversal of 79109520 is 2590197.

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 2551905 + ... + 2551935.

It is an arithmetic number, because the mean of its divisors is an integer number (1231320).

Almost surely, 2^79109520 is an apocalyptic number.

79109520 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 79109520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147758400).

79109520 is an abundant number, since it is smaller than the sum of its proper divisors (216407280).

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

79109520 is a wasteful number, since it uses less digits than its factorization.

79109520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 79109520 is about 8894.3532648529. The cubic root of 79109520 is about 429.2822350445.

The spelling of 79109520 in words is "seventy-nine million, one hundred nine thousand, five hundred twenty".