22644630 has 32 divisors (see below), whose sum is σ = 60386400. Its totient is φ = 6038496.

The previous prime is 22644623. The next prime is 22644631. The reversal of 22644630 is 3644622.

22644630 is a `hidden beast` number, since 2 + 26 + 4 + 4 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22644594 and 22644603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644631) 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 15 ways as a sum of consecutive naturals, for example, 41665 + ... + 42204.

It is an arithmetic number, because the mean of its divisors is an integer number (1887075).

Almost surely, 2^22644630 is an apocalyptic number.

22644630 is an abundant number, since it is smaller than the sum of its proper divisors (37741770).

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

22644630 is a wasteful number, since it uses less digits than its factorization.

22644630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83885 (or 83879 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 22644630 is about 4758.6374100156. The cubic root of 22644630 is about 282.9144151377.

The spelling of 22644630 in words is "twenty-two million, six hundred forty-four thousand, six hundred thirty".