22644423 has 24 divisors (see below), whose sum is σ = 33873840. Its totient is φ = 14567040.

The previous prime is 22644421. The next prime is 22644437. The reversal of 22644423 is 32444622.

It is not a de Polignac number, because 22644423 - 2¹ = 22644421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39940 + ... + 40502.

It is an arithmetic number, because the mean of its divisors is an integer number (1411410).

Almost surely, 2^22644423 is an apocalyptic number.

22644423 is a deficient number, since it is larger than the sum of its proper divisors (11229417).

22644423 is a wasteful number, since it uses less digits than its factorization.

22644423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 716 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 22644423 is about 4758.6156600423. The cubic root of 22644423 is about 282.9135530722.

The spelling of 22644423 in words is "twenty-two million, six hundred forty-four thousand, four hundred twenty-three".