79408728 has 128 divisors (see below), whose sum is σ = 260928000. Its totient is φ = 21893760.

The previous prime is 79408711. The next prime is 79408741. The reversal of 79408728 is 82780497.

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, 42943 + ... + 44753.

It is an arithmetic number, because the mean of its divisors is an integer number (2038500).

Almost surely, 2^79408728 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 79408728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130464000).

79408728 is an abundant number, since it is smaller than the sum of its proper divisors (181519272).

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

79408728 is a wasteful number, since it uses less digits than its factorization.

79408728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 79408728 is about 8911.1575005720. The cubic root of 79408728 is about 429.8227645278.

The spelling of 79408728 in words is "seventy-nine million, four hundred eight thousand, seven hundred twenty-eight".