22487636 has 12 divisors (see below), whose sum is σ = 39664128. Its totient is φ = 11155032.

The previous prime is 22487627. The next prime is 22487671. The reversal of 22487636 is 63678422.

It is a self number, because there is not a number n which added to its sum of digits gives 22487636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21626 + ... + 22641.

It is an arithmetic number, because the mean of its divisors is an integer number (3305344).

Almost surely, 2^22487636 is an apocalyptic number.

It is an amenable number.

22487636 is a deficient number, since it is larger than the sum of its proper divisors (17176492).

22487636 is a wasteful number, since it uses less digits than its factorization.

22487636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44398 (or 44396 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 22487636 is about 4742.1130311286. The cubic root of 22487636 is about 282.2590882141.

The spelling of 22487636 in words is "twenty-two million, four hundred eighty-seven thousand, six hundred thirty-six".