856304 has 20 divisors (see below), whose sum is σ = 1677720. Its totient is φ = 423360.

The previous prime is 856301. The next prime is 856309. The reversal of 856304 is 403658.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1499 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (83886).

2⁸⁵⁶³⁰⁴ is an apocalyptic number.

It is an amenable number.

856304 is a deficient number, since it is larger than the sum of its proper divisors (821416).

856304 is a wasteful number, since it uses less digits than its factorization.

856304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 856304 is about 925.3669542403. The cubic root of 856304 is about 94.9604267309.

The spelling of 856304 in words is "eight hundred fifty-six thousand, three hundred four".