22043244 has 12 divisors (see below), whose sum is σ = 51434264. Its totient is φ = 7347744.

The previous prime is 22043243. The next prime is 22043251. The reversal of 22043244 is 44234022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22043244.

It is not an unprimeable number, because it can be changed into a prime (22043243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918457 + ... + 918480.

Almost surely, 2^22043244 is an apocalyptic number.

It is an amenable number.

22043244 is an abundant number, since it is smaller than the sum of its proper divisors (29391020).

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

22043244 is a wasteful number, since it uses less digits than its factorization.

22043244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836944 (or 1836942 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22043244 is about 4695.0233226258. The cubic root of 22043244 is about 280.3874059177.

Adding to 22043244 its reverse (44234022), we get a palindrome (66277266).

The spelling of 22043244 in words is "twenty-two million, forty-three thousand, two hundred forty-four".