800256 has 40 divisors (see below), whose sum is σ = 2136024. Its totient is φ = 266240.

The previous prime is 800243. The next prime is 800281. The reversal of 800256 is 652008.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

800256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276 + ... + 1796.

2⁸⁰⁰²⁵⁶ 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 800256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068012).

800256 is an abundant number, since it is smaller than the sum of its proper divisors (1335768).

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

800256 is an equidigital number, since it uses as much as digits as its factorization.

800256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 800256 is about 894.5702879036. The cubic root of 800256 is about 92.8416776724.

The spelling of 800256 in words is "eight hundred thousand, two hundred fifty-six".