22481444 has 12 divisors (see below), whose sum is σ = 39507468. Its totient is φ = 11193600.

The previous prime is 22481383. The next prime is 22481453. The reversal of 22481444 is 44418422.

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 8702500 = 3712^2 + 2950^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10697 + ... + 12624.

It is an arithmetic number, because the mean of its divisors is an integer number (3292289).

Almost surely, 2^22481444 is an apocalyptic number.

It is an amenable number.

22481444 is a deficient number, since it is larger than the sum of its proper divisors (17026024).

22481444 is a wasteful number, since it uses less digits than its factorization.

22481444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23566 (or 23564 counting only the distinct ones).

The product of its digits is 8192, while the sum is 29.

The square root of 22481444 is about 4741.4601126657. The cubic root of 22481444 is about 282.2331790328.

Adding to 22481444 its reverse (44418422), we get a palindrome (66899866).

The spelling of 22481444 in words is "twenty-two million, four hundred eighty-one thousand, four hundred forty-four".