22444444 has 12 divisors (see below), whose sum is σ = 42848568. Its totient is φ = 10202000.

The previous prime is 22444441. The next prime is 22444483. The reversal of 22444444 is 44444422.

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

22444444 is a modest number, since divided by 4444 gives 2244 as remainder.

It is a plaindrome in base 10 and base 16.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444441) 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, 255007 + ... + 255094.

It is an arithmetic number, because the mean of its divisors is an integer number (3570714).

Almost surely, 2^22444444 is an apocalyptic number.

It is an amenable number.

22444444 is a deficient number, since it is larger than the sum of its proper divisors (20404124).

22444444 is a wasteful number, since it uses less digits than its factorization.

22444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510116 (or 510114 counting only the distinct ones).

The product of its digits is 16384, while the sum is 28.

The square root of 22444444 is about 4737.5567542775. The cubic root of 22444444 is about 282.0782607263.

Adding to 22444444 its reverse (44444422), we get a palindrome (66888866).

The spelling of 22444444 in words is "twenty-two million, four hundred forty-four thousand, four hundred forty-four".