79916928 has 128 divisors (see below), whose sum is σ = 261381120. Its totient is φ = 21067776.

The previous prime is 79916897. The next prime is 79916933. The reversal of 79916928 is 82961997.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33801 + ... + 36087.

It is an arithmetic number, because the mean of its divisors is an integer number (2042040).

Almost surely, 2^79916928 is an apocalyptic number.

79916928 is a gapful number since it is divisible by the number (78) 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 79916928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130690560).

79916928 is an abundant number, since it is smaller than the sum of its proper divisors (181464192).

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

79916928 is a wasteful number, since it uses less digits than its factorization.

79916928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324 (or 2312 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 79916928 is about 8939.6268378496. The cubic root of 79916928 is about 430.7377420206.

The spelling of 79916928 in words is "seventy-nine million, nine hundred sixteen thousand, nine hundred twenty-eight".