22044642 has 16 divisors (see below), whose sum is σ = 44837280. Its totient is φ = 7223552.

The previous prime is 22044599. The next prime is 22044679. The reversal of 22044642 is 24644022.

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, 30783 + ... + 31490.

It is an arithmetic number, because the mean of its divisors is an integer number (2802330).

Almost surely, 2^22044642 is an apocalyptic number.

22044642 is an abundant number, since it is smaller than the sum of its proper divisors (22792638).

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

22044642 is a wasteful number, since it uses less digits than its factorization.

22044642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62337.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 22044642 is about 4695.1722013149. The cubic root of 22044642 is about 280.3933332562.

Adding to 22044642 its reverse (24644022), we get a palindrome (46688664).

The spelling of 22044642 in words is "twenty-two million, forty-four thousand, six hundred forty-two".