22244138 has 24 divisors (see below), whose sum is σ = 39460644. Its totient is φ = 9376920.

The previous prime is 22244129. The next prime is 22244147. The reversal of 22244138 is 83144222.

It is an interprime number because it is at equal distance from previous prime (22244129) and next prime (22244147).

It can be written as a sum of positive squares in 2 ways, for example, as 1605289 + 20638849 = 1267^2 + 4543^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 364628 + ... + 364688.

Almost surely, 2^22244138 is an apocalyptic number.

22244138 is a deficient number, since it is larger than the sum of its proper divisors (17216506).

22244138 is an frugal number, since it uses more digits than its factorization.

22244138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 70 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 22244138 is about 4716.3691543390. The cubic root of 22244138 is about 281.2366138156.

The spelling of 22244138 in words is "twenty-two million, two hundred forty-four thousand, one hundred thirty-eight".