22656424 has 48 divisors (see below), whose sum is σ = 51146100. Its totient is φ = 9370368.

The previous prime is 22656401. The next prime is 22656451. The reversal of 22656424 is 42465622.

It can be written as a sum of positive squares in 2 ways, for example, as 22259524 + 396900 = 4718^2 + 630^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10372 + ... + 12364.

Almost surely, 2^22656424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22656424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25573050).

22656424 is an abundant number, since it is smaller than the sum of its proper divisors (28489676).

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

22656424 is a wasteful number, since it uses less digits than its factorization.

22656424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042 (or 2031 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 22656424 is about 4759.8764689853. The cubic root of 22656424 is about 282.9635233736.

The spelling of 22656424 in words is "twenty-two million, six hundred fifty-six thousand, four hundred twenty-four".