22656945 has 16 divisors (see below), whose sum is σ = 36464832. Its totient is φ = 12012480.

The previous prime is 22656899. The next prime is 22656973. The reversal of 22656945 is 54965622.

It is not a de Polignac number, because 22656945 - 2¹⁰ = 22655921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (2279052).

Almost surely, 2^22656945 is an apocalyptic number.

It is an amenable number.

22656945 is a deficient number, since it is larger than the sum of its proper divisors (13807887).

22656945 is a wasteful number, since it uses less digits than its factorization.

22656945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912.

The product of its digits is 129600, while the sum is 39.

The square root of 22656945 is about 4759.9311969817. The cubic root of 22656945 is about 282.9656923371.

The spelling of 22656945 in words is "twenty-two million, six hundred fifty-six thousand, nine hundred forty-five".