22540044 has 24 divisors (see below), whose sum is σ = 52791088. Its totient is φ = 7485120.

The previous prime is 22540031. The next prime is 22540081. The reversal of 22540044 is 44004522.

It is a self number, because there is not a number n which added to its sum of digits gives 22540044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67 + ... + 6714.

Almost surely, 2^22540044 is an apocalyptic number.

It is an amenable number.

22540044 is an abundant number, since it is smaller than the sum of its proper divisors (30251044).

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

22540044 is a wasteful number, since it uses less digits than its factorization.

22540044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065 (or 7063 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22540044 is about 4747.6356220755. The cubic root of 22540044 is about 282.4781887251.

Adding to 22540044 its reverse (44004522), we get a palindrome (66544566).

The spelling of 22540044 in words is "twenty-two million, five hundred forty thousand, forty-four".