79830520 has 64 divisors (see below), whose sum is σ = 223948800. Its totient is φ = 24881280.

The previous prime is 79830511. The next prime is 79830523. The reversal of 79830520 is 2503897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79830523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9880 + ... + 16039.

It is an arithmetic number, because the mean of its divisors is an integer number (3499200).

Almost surely, 2^79830520 is an apocalyptic number.

79830520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79830520 is an abundant number, since it is smaller than the sum of its proper divisors (144118280).

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

79830520 is a wasteful number, since it uses less digits than its factorization.

79830520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25948 (or 25944 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 79830520 is about 8934.7926668726. The cubic root of 79830520 is about 430.5824448894.

The spelling of 79830520 in words is "seventy-nine million, eight hundred thirty thousand, five hundred twenty".