22004444 has 24 divisors (see below), whose sum is σ = 48010368. Its totient is φ = 8573040.

The previous prime is 22004441. The next prime is 22004447. The reversal of 22004444 is 44440022.

It is an interprime number because it is at equal distance from previous prime (22004441) and next prime (22004447).

22004444 is a modest number, since divided by 4444 gives 2200 as remainder.

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 (22004441) 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, 35414 + ... + 36029.

It is an arithmetic number, because the mean of its divisors is an integer number (2000432).

Almost surely, 2^22004444 is an apocalyptic number.

It is an amenable number.

22004444 is an abundant number, since it is smaller than the sum of its proper divisors (26005924).

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

22004444 is a wasteful number, since it uses less digits than its factorization.

22004444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71465 (or 71463 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 22004444 is about 4690.8894678941. The cubic root of 22004444 is about 280.2227988601. Note that the first 3 decimals are identical.

Adding to 22004444 its reverse (44440022), we get a palindrome (66444466).

The spelling of 22004444 in words is "twenty-two million, four thousand, four hundred forty-four".