804856 has 32 divisors (see below), whose sum is σ = 1663200. Its totient is φ = 362880.

The previous prime is 804847. The next prime is 804857. The reversal of 804856 is 658408.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7330 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2⁸⁰⁴⁸⁵⁶ 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 804856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831600).

804856 is an abundant number, since it is smaller than the sum of its proper divisors (858344).

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

804856 is a wasteful number, since it uses less digits than its factorization.

804856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 804856 is about 897.1376705947. The cubic root of 804856 is about 93.0192275349.

The spelling of 804856 in words is "eight hundred four thousand, eight hundred fifty-six".