80813256 has 64 divisors (see below), whose sum is σ = 212241600. Its totient is φ = 25605888.

The previous prime is 80813221. The next prime is 80813261. The reversal of 80813256 is 65231808.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45766 + ... + 47498.

It is an arithmetic number, because the mean of its divisors is an integer number (3316275).

Almost surely, 2^80813256 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 80813256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106120800).

80813256 is an abundant number, since it is smaller than the sum of its proper divisors (131428344).

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

80813256 is a wasteful number, since it uses less digits than its factorization.

80813256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1834 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 80813256 is about 8989.6193467799. The cubic root of 80813256 is about 432.3421072665.

The spelling of 80813256 in words is "eighty million, eight hundred thirteen thousand, two hundred fifty-six".