22044438 has 24 divisors (see below), whose sum is σ = 51437568. Its totient is φ = 6782832.

The previous prime is 22044433. The next prime is 22044439. The reversal of 22044438 is 83444022.

It is a happy number.

22044438 is a `hidden beast` number, since 220 + 4 + 4 + 438 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46870 + ... + 47337.

It is an arithmetic number, because the mean of its divisors is an integer number (2143232).

Almost surely, 2^22044438 is an apocalyptic number.

22044438 is an abundant number, since it is smaller than the sum of its proper divisors (29393130).

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

22044438 is a wasteful number, since it uses less digits than its factorization.

22044438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94228 (or 94225 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 22044438 is about 4695.1504768218. The cubic root of 22044438 is about 280.3924683383.

The spelling of 22044438 in words is "twenty-two million, forty-four thousand, four hundred thirty-eight".