22444 has 12 divisors (see below), whose sum is σ = 40768. Its totient is φ = 10800.

The previous prime is 22441. The next prime is 22447. The reversal of 22444 is 44422.

It is an interprime number because it is at equal distance from previous prime (22441) and next prime (22447).

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10 and base 16.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34 + ... + 214.

2²²⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

22444 is a deficient number, since it is larger than the sum of its proper divisors (18324).

22444 is a wasteful number, since it uses less digits than its factorization.

22444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 214 counting only the distinct ones).

The product of its digits is 256, while the sum is 16.

The square root of 22444 is about 149.8132170404. The cubic root of 22444 is about 28.2076400673.

Adding to 22444 its reverse (44422), we get a palindrome (66866).

The spelling of 22444 in words is "twenty-two thousand, four hundred forty-four", and thus it is an iban number.