22243442 has 12 divisors (see below), whose sum is σ = 36129690. Its totient is φ = 10266048.

The previous prime is 22243439. The next prime is 22243447. The reversal of 22243442 is 24434222.

It can be written as a sum of positive squares in 3 ways, for example, as 17131321 + 5112121 = 4139^2 + 2261^2 .

It is not an unprimeable number, because it can be changed into a prime (22243447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32567 + ... + 33242.

Almost surely, 2^22243442 is an apocalyptic number.

22243442 is a deficient number, since it is larger than the sum of its proper divisors (13886248).

22243442 is a wasteful number, since it uses less digits than its factorization.

22243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65837 (or 65824 counting only the distinct ones).

The product of its digits is 3072, while the sum is 23.

The square root of 22243442 is about 4716.2953681889. The cubic root of 22243442 is about 281.2336805675.

Adding to 22243442 its reverse (24434222), we get a palindrome (46677664).

The spelling of 22243442 in words is "twenty-two million, two hundred forty-three thousand, four hundred forty-two".