22444644 has 24 divisors (see below), whose sum is σ = 53787328. Its totient is φ = 7279200.

The previous prime is 22444577. The next prime is 22444661. The reversal of 22444644 is 44644422.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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, 24832 + ... + 25719.

Almost surely, 2^22444644 is an apocalyptic number.

It is an amenable number.

22444644 is an abundant number, since it is smaller than the sum of its proper divisors (31342684).

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

22444644 is a wasteful number, since it uses less digits than its factorization.

22444644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50595 (or 50593 counting only the distinct ones).

The product of its digits is 24576, while the sum is 30.

The square root of 22444644 is about 4737.5778621570. The cubic root of 22444644 is about 282.0790985800.

The spelling of 22444644 in words is "twenty-two million, four hundred forty-four thousand, six hundred forty-four".