22009244 has 6 divisors (see below), whose sum is σ = 38516184. Its totient is φ = 11004620.

The previous prime is 22009241. The next prime is 22009261. The reversal of 22009244 is 44290022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22009241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751152 + ... + 2751159.

It is an arithmetic number, because the mean of its divisors is an integer number (6419364).

Almost surely, 2^22009244 is an apocalyptic number.

It is an amenable number.

22009244 is a deficient number, since it is larger than the sum of its proper divisors (16506940).

22009244 is a wasteful number, since it uses less digits than its factorization.

22009244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502315 (or 5502313 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22009244 is about 4691.4010700429. The cubic root of 22009244 is about 280.2431731028.

Adding to 22009244 its reverse (44290022), we get a palindrome (66299266).

The spelling of 22009244 in words is "twenty-two million, nine thousand, two hundred forty-four".