22443236 has 12 divisors (see below), whose sum is σ = 40233900. Its totient is φ = 10947840.

The previous prime is 22443233. The next prime is 22443241. The reversal of 22443236 is 63234422.

It can be written as a sum of positive squares in 2 ways, for example, as 409600 + 22033636 = 640^2 + 4694^2 .

It is not an unprimeable number, because it can be changed into a prime (22443233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68261 + ... + 68588.

It is an arithmetic number, because the mean of its divisors is an integer number (3352825).

Almost surely, 2^22443236 is an apocalyptic number.

It is an amenable number.

22443236 is a deficient number, since it is larger than the sum of its proper divisors (17790664).

22443236 is a wasteful number, since it uses less digits than its factorization.

22443236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136894 (or 136892 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 22443236 is about 4737.4292606856. The cubic root of 22443236 is about 282.0731999838.

Adding to 22443236 its reverse (63234422), we get a palindrome (85677658).

The spelling of 22443236 in words is "twenty-two million, four hundred forty-three thousand, two hundred thirty-six".