22644042 has 16 divisors (see below), whose sum is σ = 45360480. Its totient is φ = 7535952.

The previous prime is 22644019. The next prime is 22644047. The reversal of 22644042 is 24044622.

It is not an unprimeable number, because it can be changed into a prime (22644047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593 + ... + 6915.

It is an arithmetic number, because the mean of its divisors is an integer number (2835030).

Almost surely, 2^22644042 is an apocalyptic number.

22644042 is an abundant number, since it is smaller than the sum of its proper divisors (22716438).

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

22644042 is a wasteful number, since it uses less digits than its factorization.

22644042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037.

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

The square root of 22644042 is about 4758.5756272229. The cubic root of 22644042 is about 282.9119663583.

Adding to 22644042 its reverse (24044622), we get a palindrome (46688664).

The spelling of 22644042 in words is "twenty-two million, six hundred forty-four thousand, forty-two".