809256 has 32 divisors (see below), whose sum is σ = 2312640. Its totient is φ = 231168.

The previous prime is 809243. The next prime is 809261. The reversal of 809256 is 652908.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809256.

It is an unprimeable number.

809256 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 7 ways as a sum of consecutive naturals, for example, 2241 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (72270).

2⁸⁰⁹²⁵⁶ is an apocalyptic number.

It is an amenable number.

809256 is an abundant number, since it is smaller than the sum of its proper divisors (1503384).

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

809256 is a wasteful number, since it uses less digits than its factorization.

809256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833 (or 4829 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 809256 is about 899.5865717095. The cubic root of 809256 is about 93.1884259298.

The spelling of 809256 in words is "eight hundred nine thousand, two hundred fifty-six".