79928628 has 48 divisors (see below), whose sum is σ = 212667840. Its totient is φ = 23145984.

The previous prime is 79928617. The next prime is 79928647. The reversal of 79928628 is 82682997.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 12418 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (4430580).

Almost surely, 2^79928628 is an apocalyptic number.

79928628 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

79928628 is an abundant number, since it is smaller than the sum of its proper divisors (132739212).

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

79928628 is a wasteful number, since it uses less digits than its factorization.

79928628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30176 (or 30174 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 79928628 is about 8940.2812036311. The cubic root of 79928628 is about 430.7587612873.

The spelling of 79928628 in words is "seventy-nine million, nine hundred twenty-eight thousand, six hundred twenty-eight".