79921152 has 96 divisors (see below), whose sum is σ = 231731760. Its totient is φ = 26542080.

The previous prime is 79921141. The next prime is 79921169. The reversal of 79921152 is 25112997.

It is a tau number, because it is divible by the number of its divisors (96).

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 5 ways as a sum of consecutive naturals, for example, 294777 + ... + 295047.

Almost surely, 2^79921152 is an apocalyptic number.

79921152 is a gapful number since it is divisible by the number (72) 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 79921152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115865880).

79921152 is an abundant number, since it is smaller than the sum of its proper divisors (151810608).

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

79921152 is an equidigital number, since it uses as much as digits as its factorization.

79921152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 276 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 79921152 is about 8939.8630861999. The cubic root of 79921152 is about 430.7453307514.

The spelling of 79921152 in words is "seventy-nine million, nine hundred twenty-one thousand, one hundred fifty-two".