79828715 has 4 divisors (see below), whose sum is σ = 95794464. Its totient is φ = 63862968.

The previous prime is 79828669. The next prime is 79828733. The reversal of 79828715 is 51782897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51782897 = 541 ⋅95717.

It is a cyclic number.

It is not a de Polignac number, because 79828715 - 2²⁰ = 78780139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79828715.

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 3 ways as a sum of consecutive naturals, for example, 7982867 + ... + 7982876.

It is an arithmetic number, because the mean of its divisors is an integer number (23948616).

Almost surely, 2^79828715 is an apocalyptic number.

79828715 is a deficient number, since it is larger than the sum of its proper divisors (15965749).

79828715 is a wasteful number, since it uses less digits than its factorization.

79828715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15965748.

The product of its digits is 282240, while the sum is 47.

The square root of 79828715 is about 8934.6916566830. The cubic root of 79828715 is about 430.5791996512.

The spelling of 79828715 in words is "seventy-nine million, eight hundred twenty-eight thousand, seven hundred fifteen".