22643852 has 48 divisors (see below), whose sum is σ = 50765568. Its totient is φ = 8579520.

The previous prime is 22643851. The next prime is 22643861. The reversal of 22643852 is 25834622.

It is not an unprimeable number, because it can be changed into a prime (22643851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10403 + ... + 12389.

It is an arithmetic number, because the mean of its divisors is an integer number (1057616).

Almost surely, 2^22643852 is an apocalyptic number.

22643852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22643852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25382784).

22643852 is an abundant number, since it is smaller than the sum of its proper divisors (28121716).

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

22643852 is a wasteful number, since it uses less digits than its factorization.

22643852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 2044 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 22643852 is about 4758.5556632239. Note that the first 3 decimals coincide. The cubic root of 22643852 is about 282.9111750769.

It can be divided in two parts, 2264 and 3852, that added together give a palindrome (6116).

The spelling of 22643852 in words is "twenty-two million, six hundred forty-three thousand, eight hundred fifty-two".