79680980 has 96 divisors (see below), whose sum is σ = 183859200. Its totient is φ = 28933632.

The previous prime is 79680977. The next prime is 79681001. The reversal of 79680980 is 8908697.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1008581 + ... + 1008659.

It is an arithmetic number, because the mean of its divisors is an integer number (1915200).

Almost surely, 2^79680980 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 79680980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91929600).

79680980 is an abundant number, since it is smaller than the sum of its proper divisors (104178220).

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

79680980 is a wasteful number, since it uses less digits than its factorization.

79680980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 79680980 is about 8926.4203351624. The cubic root of 79680980 is about 430.3134185163.

The spelling of 79680980 in words is "seventy-nine million, six hundred eighty thousand, nine hundred eighty".