22304444 has 24 divisors (see below), whose sum is σ = 40360320. Its totient is φ = 10778544.

The previous prime is 22304441. The next prime is 22304473. The reversal of 22304444 is 44440322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22304441) by changing a digit.

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, 17087 + ... + 18345.

It is an arithmetic number, because the mean of its divisors is an integer number (1681680).

Almost surely, 2^22304444 is an apocalyptic number.

It is an amenable number.

22304444 is a deficient number, since it is larger than the sum of its proper divisors (18055876).

22304444 is a wasteful number, since it uses less digits than its factorization.

22304444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 22304444 is about 4722.7580924710. The cubic root of 22304444 is about 281.4905376630.

Adding to 22304444 its reverse (44440322), we get a palindrome (66744766).

The spelling of 22304444 in words is "twenty-two million, three hundred four thousand, four hundred forty-four".