79928920 has 16 divisors (see below), whose sum is σ = 179840160. Its totient is φ = 31971552.

The previous prime is 79928897. The next prime is 79928921. The reversal of 79928920 is 2982997.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79928921) 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 3 ways as a sum of consecutive naturals, for example, 999072 + ... + 999151.

It is an arithmetic number, because the mean of its divisors is an integer number (11240010).

Almost surely, 2^79928920 is an apocalyptic number.

It is an amenable number.

79928920 is an abundant number, since it is smaller than the sum of its proper divisors (99911240).

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

79928920 is a wasteful number, since it uses less digits than its factorization.

79928920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998234 (or 1998230 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 79928920 is about 8940.2975341987. The cubic root of 79928920 is about 430.7592858445.

The spelling of 79928920 in words is "seventy-nine million, nine hundred twenty-eight thousand, nine hundred twenty".