80716880 has 40 divisors (see below), whose sum is σ = 191217672. Its totient is φ = 31675904.

The previous prime is 80716873. The next prime is 80716927. The reversal of 80716880 is 8861708.

It can be written as a sum of positive squares in 4 ways, for example, as 506944 + 80209936 = 712^2 + 8956^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 5279 + ... + 13758.

Almost surely, 2^80716880 is an apocalyptic number.

80716880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80716880 is an abundant number, since it is smaller than the sum of its proper divisors (110500792).

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

80716880 is a wasteful number, since it uses less digits than its factorization.

80716880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19103 (or 19097 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 80716880 is about 8984.2573427079. The cubic root of 80716880 is about 432.1701718695.

The spelling of 80716880 in words is "eighty million, seven hundred sixteen thousand, eight hundred eighty".