22644442 has 8 divisors (see below), whose sum is σ = 35964756. Its totient is φ = 10656192.

The previous prime is 22644437. The next prime is 22644451. The reversal of 22644442 is 24444622.

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 657721 = 4689^2 + 811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22644442.

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 3 ways as a sum of consecutive naturals, for example, 332973 + ... + 333040.

Almost surely, 2^22644442 is an apocalyptic number.

22644442 is a deficient number, since it is larger than the sum of its proper divisors (13320314).

22644442 is a wasteful number, since it uses less digits than its factorization.

22644442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666032.

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

The square root of 22644442 is about 4758.6176564208. The cubic root of 22644442 is about 282.9136321992.

The spelling of 22644442 in words is "twenty-two million, six hundred forty-four thousand, four hundred forty-two".