22004004444 has 12 divisors (see below), whose sum is σ = 51342677064. Its totient is φ = 7334668144.

The previous prime is 22004004401. The next prime is 22004004457. The reversal of 22004004444 is 44440040022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916833507 + ... + 916833530.

It is an arithmetic number, because the mean of its divisors is an integer number (4278556422).

Almost surely, 2^22004004444 is an apocalyptic number.

It is an amenable number.

22004004444 is an abundant number, since it is smaller than the sum of its proper divisors (29338672620).

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

22004004444 is a wasteful number, since it uses less digits than its factorization.

22004004444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833667044 (or 1833667042 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 22004004444 its reverse (44440040022), we get a palindrome (66444044466).

The spelling of 22004004444 in words is "twenty-two billion, four million, four thousand, four hundred forty-four".