22228656 has 40 divisors (see below), whose sum is σ = 60804144. Its totient is φ = 6973440.

The previous prime is 22228631. The next prime is 22228667. The reversal of 22228656 is 65682222.

It is a super-2 number, since 2×22228656² = 988226295132672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12805 + ... + 14436.

Almost surely, 2^22228656 is an apocalyptic number.

It is an amenable number.

22228656 is an abundant number, since it is smaller than the sum of its proper divisors (38575488).

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

22228656 is a wasteful number, since it uses less digits than its factorization.

22228656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27269 (or 27263 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 22228656 is about 4714.7275637093. The cubic root of 22228656 is about 281.1713514409.

It can be divided in two parts, 2222 and 8656, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 22228656 in words is "twenty-two million, two hundred twenty-eight thousand, six hundred fifty-six".