22238656 has 56 divisors (see below), whose sum is σ = 49743360. Its totient is φ = 9772800.

The previous prime is 22238639. The next prime is 22238663. The reversal of 22238656 is 65683222.

It is a congruent number.

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, 21315 + ... + 22333.

Almost surely, 2^22238656 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 22238656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24871680).

22238656 is an abundant number, since it is smaller than the sum of its proper divisors (27504704).

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

22238656 is a wasteful number, since it uses less digits than its factorization.

22238656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1063 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 22238656 is about 4715.7879511276. The cubic root of 22238656 is about 281.2135086153.

The spelling of 22238656 in words is "twenty-two million, two hundred thirty-eight thousand, six hundred fifty-six".