22545444 has 24 divisors (see below), whose sum is σ = 52739680. Its totient is φ = 7496064.

The previous prime is 22545443. The next prime is 22545461. The reversal of 22545444 is 44454522.

It is not an unprimeable number, because it can be changed into a prime (22545443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3027 + ... + 7365.

Almost surely, 2^22545444 is an apocalyptic number.

It is an amenable number.

22545444 is an abundant number, since it is smaller than the sum of its proper divisors (30194236).

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

22545444 is a wasteful number, since it uses less digits than its factorization.

22545444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779 (or 4777 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 22545444 is about 4748.2042921509. The cubic root of 22545444 is about 282.5007450316.

Adding to 22545444 its reverse (44454522), we get a palindrome (66999966).

The spelling of 22545444 in words is "twenty-two million, five hundred forty-five thousand, four hundred forty-four".