22906 has 8 divisors (see below), whose sum is σ = 37044. Its totient is φ = 10560.

The previous prime is 22901. The next prime is 22907. The reversal of 22906 is 60922.

It can be written as a sum of positive squares in 2 ways, for example, as 19881 + 3025 = 141^2 + 55^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22901) 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, 415 + ... + 466.

2²²⁹⁰⁶ is an apocalyptic number.

22906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22906 is a deficient number, since it is larger than the sum of its proper divisors (14138).

22906 is a wasteful number, since it uses less digits than its factorization.

22906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 22906 is about 151.3472827638. The cubic root of 22906 is about 28.3998743630.

The spelling of 22906 in words is "twenty-two thousand, nine hundred six".