22644906 has 16 divisors (see below), whose sum is σ = 45347904. Its totient is φ = 7538624.

The previous prime is 22644899. The next prime is 22644913. The reversal of 22644906 is 60944622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22644899) and next prime (22644913).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931 + ... + 7793.

It is an arithmetic number, because the mean of its divisors is an integer number (2834244).

Almost surely, 2^22644906 is an apocalyptic number.

22644906 is an abundant number, since it is smaller than the sum of its proper divisors (22702998).

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

22644906 is a wasteful number, since it uses less digits than its factorization.

22644906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 22644906 is about 4758.6664098253. Note that the first 3 decimals coincide. The cubic root of 22644906 is about 282.9155645502.

The spelling of 22644906 in words is "twenty-two million, six hundred forty-four thousand, nine hundred six".