79681924 has 72 divisors (see below), whose sum is σ = 173983040. Its totient is φ = 31256064.

The previous prime is 79681891. The next prime is 79681963. The reversal of 79681924 is 42918697.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347842 + ... + 348070.

Almost surely, 2^79681924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79681924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86991520).

79681924 is an abundant number, since it is smaller than the sum of its proper divisors (94301116).

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

79681924 is a wasteful number, since it uses less digits than its factorization.

79681924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 298 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 79681924 is about 8926.4732117449. The cubic root of 79681924 is about 430.3151178523.

The spelling of 79681924 in words is "seventy-nine million, six hundred eighty-one thousand, nine hundred twenty-four".