808256 has 28 divisors (see below), whose sum is σ = 1635252. Its totient is φ = 396288.

The previous prime is 808237. The next prime is 808261. The reversal of 808256 is 652808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 193600 = 784^2 + 440^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

808256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586 + ... + 4758.

2⁸⁰⁸²⁵⁶ 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 808256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817626).

808256 is an abundant number, since it is smaller than the sum of its proper divisors (826996).

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

808256 is a wasteful number, since it uses less digits than its factorization.

808256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 808256 is about 899.0305890235. The cubic root of 808256 is about 93.1500257052.

The spelling of 808256 in words is "eight hundred eight thousand, two hundred fifty-six".