80120856 has 16 divisors (see below), whose sum is σ = 200302200. Its totient is φ = 26706944.

The previous prime is 80120837. The next prime is 80120861. The reversal of 80120856 is 65802108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669161 + ... + 1669208.

Almost surely, 2^80120856 is an apocalyptic number.

It is an amenable number.

80120856 is an abundant number, since it is smaller than the sum of its proper divisors (120181344).

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

80120856 is a wasteful number, since it uses less digits than its factorization.

80120856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338378 (or 3338374 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 80120856 is about 8951.0254161185. The cubic root of 80120856 is about 431.1038091330.

The spelling of 80120856 in words is "eighty million, one hundred twenty thousand, eight hundred fifty-six".