79813880 has 48 divisors (see below), whose sum is σ = 184223160. Its totient is φ = 31120640.

The previous prime is 79813781. The next prime is 79813897. The reversal of 79813880 is 8831897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66647 + ... + 67833.

Almost surely, 2^79813880 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 79813880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92111580).

79813880 is an abundant number, since it is smaller than the sum of its proper divisors (104409280).

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

79813880 is a wasteful number, since it uses less digits than its factorization.

79813880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 79813880 is about 8933.8614271769. The cubic root of 79813880 is about 430.5525257150.

The spelling of 79813880 in words is "seventy-nine million, eight hundred thirteen thousand, eight hundred eighty".