22861656 has 64 divisors (see below), whose sum is σ = 64735200. Its totient is φ = 7473024.

The previous prime is 22861649. The next prime is 22861661. The reversal of 22861656 is 65616822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22861656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10450 + ... + 12446.

Almost surely, 2^22861656 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 22861656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32367600).

22861656 is an abundant number, since it is smaller than the sum of its proper divisors (41873544).

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

22861656 is a wasteful number, since it uses less digits than its factorization.

22861656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2055 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 22861656 is about 4781.3864098188. The cubic root of 22861656 is about 283.8153597165.

The spelling of 22861656 in words is "twenty-two million, eight hundred sixty-one thousand, six hundred fifty-six".