22000636 has 12 divisors (see below), whose sum is σ = 44001328. Its totient is φ = 9428832.

The previous prime is 22000633. The next prime is 22000639. The reversal of 22000636 is 63600022.

It is an interprime number because it is at equal distance from previous prime (22000633) and next prime (22000639).

22000636 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392841 + ... + 392896.

Almost surely, 2^22000636 is an apocalyptic number.

It is an amenable number.

22000636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22000636 is a wasteful number, since it uses less digits than its factorization.

22000636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785748 (or 785746 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22000636 is about 4690.4835571612. The cubic root of 22000636 is about 280.2066331865.

Adding to 22000636 its reverse (63600022), we get a palindrome (85600658).

The spelling of 22000636 in words is "twenty-two million, six hundred thirty-six", and thus it is an aban number.