22244445 has 24 divisors (see below), whose sum is σ = 38667096. Its totient is φ = 11829888.

The previous prime is 22244441. The next prime is 22244477. The reversal of 22244445 is 54444222.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 20985561 = 1122^2 + 4581^2 .

It is not a de Polignac number, because 22244445 - 2² = 22244441 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29007 + ... + 29763.

It is an arithmetic number, because the mean of its divisors is an integer number (1611129).

Almost surely, 2^22244445 is an apocalyptic number.

It is an amenable number.

22244445 is a deficient number, since it is larger than the sum of its proper divisors (16422651).

22244445 is a wasteful number, since it uses less digits than its factorization.

22244445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1418 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 22244445 is about 4716.4017004492. The cubic root of 22244445 is about 281.2379076282.

Adding to 22244445 its reverse (54444222), we get a palindrome (76688667).

The spelling of 22244445 in words is "twenty-two million, two hundred forty-four thousand, four hundred forty-five".