79628864 has 28 divisors (see below), whose sum is σ = 180587904. Its totient is φ = 34126464.

The previous prime is 79628849. The next prime is 79628869. The reversal of 79628864 is 46882697.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (79628869) 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 3 ways as a sum of consecutive naturals, for example, 88424 + ... + 89319.

It is an arithmetic number, because the mean of its divisors is an integer number (6449568).

Almost surely, 2^79628864 is an apocalyptic number.

It is an amenable number.

79628864 is an abundant number, since it is smaller than the sum of its proper divisors (100959040).

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

79628864 is a wasteful number, since it uses less digits than its factorization.

79628864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177762 (or 177752 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 79628864 is about 8923.5006583739. The cubic root of 79628864 is about 430.2195813788.

The spelling of 79628864 in words is "seventy-nine million, six hundred twenty-eight thousand, eight hundred sixty-four".