822804 has 12 divisors (see below), whose sum is σ = 1919904. Its totient is φ = 274264.

The previous prime is 822803. The next prime is 822821. The reversal of 822804 is 408228.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822803) 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, 34272 + ... + 34295.

It is an arithmetic number, because the mean of its divisors is an integer number (159992).

2⁸²²⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

822804 is an abundant number, since it is smaller than the sum of its proper divisors (1097100).

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

822804 is a wasteful number, since it uses less digits than its factorization.

822804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68574 (or 68572 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 822804 is about 907.0854425025. The cubic root of 822804 is about 93.7055825145.

The spelling of 822804 in words is "eight hundred twenty-two thousand, eight hundred four".