22643152 has 40 divisors (see below), whose sum is σ = 51371712. Its totient is φ = 9465600.

The previous prime is 22643141. The next prime is 22643161. The reversal of 22643152 is 25134622.

It is a congruent number.

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, 2127 + ... + 7057.

Almost surely, 2^22643152 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 22643152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25685856).

22643152 is an abundant number, since it is smaller than the sum of its proper divisors (28728560).

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

22643152 is a wasteful number, since it uses less digits than its factorization.

22643152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987 (or 4981 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 22643152 is about 4758.4821109257. The cubic root of 22643152 is about 282.9082597917.

Adding to 22643152 its reverse (25134622), we get a palindrome (47777774).

The spelling of 22643152 in words is "twenty-two million, six hundred forty-three thousand, one hundred fifty-two".