79722828 has 36 divisors (see below), whose sum is σ = 203957208. Its totient is φ = 26253120.

The previous prime is 79722823. The next prime is 79722829. The reversal of 79722828 is 82822797.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (79722821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10353 + ... + 16328.

It is an arithmetic number, because the mean of its divisors is an integer number (5665478).

Almost surely, 2^79722828 is an apocalyptic number.

It is an amenable number.

79722828 is an abundant number, since it is smaller than the sum of its proper divisors (124234380).

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

79722828 is a wasteful number, since it uses less digits than its factorization.

79722828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26774 (or 26769 counting only the distinct ones).

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

The square root of 79722828 is about 8928.7640802073. The cubic root of 79722828 is about 430.3887380565.

The spelling of 79722828 in words is "seventy-nine million, seven hundred twenty-two thousand, eight hundred twenty-eight".