79681628 has 24 divisors (see below), whose sum is σ = 150647952. Its totient is φ = 36658944.

The previous prime is 79681603. The next prime is 79681639. The reversal of 79681628 is 82618697.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15251 + ... + 19797.

It is an arithmetic number, because the mean of its divisors is an integer number (6276998).

Almost surely, 2^79681628 is an apocalyptic number.

It is an amenable number.

79681628 is a deficient number, since it is larger than the sum of its proper divisors (70966324).

79681628 is a wasteful number, since it uses less digits than its factorization.

79681628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901 (or 4899 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 79681628 is about 8926.4566318333. The cubic root of 79681628 is about 430.3145850111.

The spelling of 79681628 in words is "seventy-nine million, six hundred eighty-one thousand, six hundred twenty-eight".