22005650 has 24 divisors (see below), whose sum is σ = 43339860. Its totient is φ = 8284160.

The previous prime is 22005649. The next prime is 22005673. The reversal of 22005650 is 5650022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 17081689 + 4923961 = 4133^2 + 2219^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12095 + ... + 13794.

Almost surely, 2^22005650 is an apocalyptic number.

22005650 is a deficient number, since it is larger than the sum of its proper divisors (21334210).

22005650 is a wasteful number, since it uses less digits than its factorization.

22005650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25918 (or 25913 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 22005650 is about 4691.0180131822. The cubic root of 22005650 is about 280.2279181673.

Adding to 22005650 its reverse (5650022), we get a palindrome (27655672).

The spelling of 22005650 in words is "twenty-two million, five thousand, six hundred fifty".