22043144 has 8 divisors (see below), whose sum is σ = 41330910. Its totient is φ = 11021568.

The previous prime is 22043137. The next prime is 22043159. The reversal of 22043144 is 44134022.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 3467044 = 4310^2 + 1862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377689 + ... + 1377704.

Almost surely, 2^22043144 is an apocalyptic number.

It is an amenable number.

22043144 is a deficient number, since it is larger than the sum of its proper divisors (19287766).

22043144 is a wasteful number, since it uses less digits than its factorization.

22043144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755399 (or 2755395 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22043144 is about 4695.0126730393. The cubic root of 22043144 is about 280.3869819211.

Adding to 22043144 its reverse (44134022), we get a palindrome (66177166).

The spelling of 22043144 in words is "twenty-two million, forty-three thousand, one hundred forty-four".