22440656 has 20 divisors (see below), whose sum is σ = 49690272. Its totient is φ = 9617376.

The previous prime is 22440643. The next prime is 22440679. The reversal of 22440656 is 65604422.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100070 + ... + 100293.

Almost surely, 2^22440656 is an apocalyptic number.

It is an amenable number.

22440656 is an abundant number, since it is smaller than the sum of its proper divisors (27249616).

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

22440656 is a wasteful number, since it uses less digits than its factorization.

22440656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200378 (or 200372 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 22440656 is about 4737.1569532790. The cubic root of 22440656 is about 282.0623908363.

The spelling of 22440656 in words is "twenty-two million, four hundred forty thousand, six hundred fifty-six".