22808 has 8 divisors (see below), whose sum is σ = 42780. Its totient is φ = 11400.

The previous prime is 22807. The next prime is 22811. The reversal of 22808 is 80822.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 12.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 22808.

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, 1418 + ... + 1433.

2²²⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

22808 is a deficient number, since it is larger than the sum of its proper divisors (19972).

22808 is a wasteful number, since it uses less digits than its factorization.

22808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857 (or 2853 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22808 is about 151.0231770292. The cubic root of 22808 is about 28.3593148836.

The spelling of 22808 in words is "twenty-two thousand, eight hundred eight".