79128790 has 32 divisors (see below), whose sum is σ = 155566656. Its totient is φ = 28801920.

The previous prime is 79128769. The next prime is 79128851. The reversal of 79128790 is 9782197.

It is a happy number.

It is a super-2 number, since 2×79128790² = 12522730813728200, which contains 22 as substring.

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, 4944 + ... + 13516.

It is an arithmetic number, because the mean of its divisors is an integer number (4861458).

Almost surely, 2^79128790 is an apocalyptic number.

79128790 is a deficient number, since it is larger than the sum of its proper divisors (76437866).

79128790 is a wasteful number, since it uses less digits than its factorization.

79128790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8664.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 79128790 is about 8895.4364704606. The cubic root of 79128790 is about 429.3170879804.

The spelling of 79128790 in words is "seventy-nine million, one hundred twenty-eight thousand, seven hundred ninety".