22243144 has 32 divisors (see below), whose sum is σ = 51998400. Its totient is φ = 8665920.

The previous prime is 22243141. The next prime is 22243153. The reversal of 22243144 is 44134222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (22243141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17439 + ... + 18670.

It is an arithmetic number, because the mean of its divisors is an integer number (1624950).

Almost surely, 2^22243144 is an apocalyptic number.

It is an amenable number.

22243144 is an abundant number, since it is smaller than the sum of its proper divisors (29755256).

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

22243144 is a wasteful number, since it uses less digits than its factorization.

22243144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36133 (or 36129 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 22243144 is about 4716.2637754901. The cubic root of 22243144 is about 281.2324246466.

Adding to 22243144 its reverse (44134222), we get a palindrome (66377366).

The spelling of 22243144 in words is "twenty-two million, two hundred forty-three thousand, one hundred forty-four".