22546656 has 108 divisors (see below), whose sum is σ = 70584696. Its totient is φ = 6821760.

The previous prime is 22546651. The next prime is 22546687. The reversal of 22546656 is 65664522.

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 22546656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22546651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34525 + ... + 35171.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 2^22546656 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 22546656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35292348).

22546656 is an abundant number, since it is smaller than the sum of its proper divisors (48038040).

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

22546656 is a wasteful number, since it uses less digits than its factorization.

22546656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 663 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 22546656 is about 4748.3319176317. The cubic root of 22546656 is about 282.5058071743.

It can be divided in two parts, 225466 and 56, that added together give a palindrome (225522).

The spelling of 22546656 in words is "twenty-two million, five hundred forty-six thousand, six hundred fifty-six".