22804 has 6 divisors (see below), whose sum is σ = 39914. Its totient is φ = 11400.

The previous prime is 22787. The next prime is 22807. The reversal of 22804 is 40822.

It can be written as a sum of positive squares in only one way, i.e., 21904 + 900 = 148^2 + 30^2 .

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2847 + ... + 2854.

2²²⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

22804 is a deficient number, since it is larger than the sum of its proper divisors (17110).

22804 is a wasteful number, since it uses less digits than its factorization.

22804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705 (or 5703 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22804 is about 151.0099334481. The cubic root of 22804 is about 28.3576569289.

The spelling of 22804 in words is "twenty-two thousand, eight hundred four".