22009626 has 12 divisors (see below), whose sum is σ = 47687562. Its totient is φ = 7336536.

The previous prime is 22009613. The next prime is 22009633. The reversal of 22009626 is 62690022.

It can be written as a sum of positive squares in only one way, i.e., 14175225 + 7834401 = 3765^2 + 2799^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22009626.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611361 + ... + 611396.

Almost surely, 2^22009626 is an apocalyptic number.

22009626 is an abundant number, since it is smaller than the sum of its proper divisors (25677936).

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

22009626 is a wasteful number, since it uses less digits than its factorization.

22009626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222765 (or 1222762 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22009626 is about 4691.4417826506. The cubic root of 22009626 is about 280.2447944256.

Adding to 22009626 its reverse (62690022), we get a palindrome (84699648).

The spelling of 22009626 in words is "twenty-two million, nine thousand, six hundred twenty-six".