22045444 has 24 divisors (see below), whose sum is σ = 39715200. Its totient is φ = 10702176.

The previous prime is 22045427. The next prime is 22045459. The reversal of 22045444 is 44454022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27619 + ... + 28405.

It is an arithmetic number, because the mean of its divisors is an integer number (1654800).

Almost surely, 2^22045444 is an apocalyptic number.

It is an amenable number.

22045444 is a deficient number, since it is larger than the sum of its proper divisors (17669756).

22045444 is a wasteful number, since it uses less digits than its factorization.

22045444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 22045444 is about 4695.2576074162. The cubic root of 22045444 is about 280.3967335190.

Adding to 22045444 its reverse (44454022), we get a palindrome (66499466).

The spelling of 22045444 in words is "twenty-two million, forty-five thousand, four hundred forty-four".