22445444 has 24 divisors (see below), whose sum is σ = 45400320. Its totient is φ = 9510336.

The previous prime is 22445431. The next prime is 22445459. The reversal of 22445444 is 44454422.

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 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (1891680).

Almost surely, 2^22445444 is an apocalyptic number.

It is an amenable number.

22445444 is an abundant number, since it is smaller than the sum of its proper divisors (22954876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22445444 is a wasteful number, since it uses less digits than its factorization.

22445444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9107 (or 9105 counting only the distinct ones).

The product of its digits is 20480, while the sum is 29.

The square root of 22445444 is about 4737.6622927347. The cubic root of 22445444 is about 282.0824499452.

Adding to 22445444 its reverse (44454422), we get a palindrome (66899866).

The spelling of 22445444 in words is "twenty-two million, four hundred forty-five thousand, four hundred forty-four".