22000444 has 24 divisors (see below), whose sum is σ = 40294800. Its totient is φ = 10496640.

The previous prime is 22000441. The next prime is 22000453. The reversal of 22000444 is 44400022.

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 (22000441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9259 + ... + 11389.

It is an arithmetic number, because the mean of its divisors is an integer number (1678950).

Almost surely, 2^22000444 is an apocalyptic number.

It is an amenable number.

22000444 is a deficient number, since it is larger than the sum of its proper divisors (18294356).

22000444 is a wasteful number, since it uses less digits than its factorization.

22000444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253 (or 2251 counting only the distinct ones).

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

The square root of 22000444 is about 4690.4630901437. The cubic root of 22000444 is about 280.2058180611.

Adding to 22000444 its reverse (44400022), we get a palindrome (66400466).

The spelling of 22000444 in words is "twenty-two million, four hundred forty-four", and thus it is an aban number.