80207856 has 30 divisors (see below), whose sum is σ = 224471000. Its totient is φ = 26735904.

The previous prime is 80207821. The next prime is 80207879. The reversal of 80207856 is 65870208.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 80207856.

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 5 ways as a sum of consecutive naturals, for example, 278356 + ... + 278643.

Almost surely, 2^80207856 is an apocalyptic number.

It is an amenable number.

80207856 is an abundant number, since it is smaller than the sum of its proper divisors (144263144).

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

80207856 is a wasteful number, since it uses less digits than its factorization.

80207856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557013 (or 557004 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 80207856 is about 8955.8838759778. The cubic root of 80207856 is about 431.2597920902.

It can be divided in two parts, 8020 and 7856, that added together give a square (15876 = 126²).

The spelling of 80207856 in words is "eighty million, two hundred seven thousand, eight hundred fifty-six".