22031404444 has 48 divisors (see below), whose sum is σ = 44771021568. Its totient is φ = 9290590848.

The previous prime is 22031404433. The next prime is 22031404463. The reversal of 22031404444 is 44440413022.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781667 + ... + 1793989.

It is an arithmetic number, because the mean of its divisors is an integer number (932729616).

Almost surely, 2^22031404444 is an apocalyptic number.

It is an amenable number.

22031404444 is an abundant number, since it is smaller than the sum of its proper divisors (22739617124).

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

22031404444 is a wasteful number, since it uses less digits than its factorization.

22031404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13354 (or 13352 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22031404444 its reverse (44440413022), we get a palindrome (66471817466).

The spelling of 22031404444 in words is "twenty-two billion, thirty-one million, four hundred four thousand, four hundred forty-four".