22638668 has 12 divisors (see below), whose sum is σ = 42665280. Its totient is φ = 10448592.

The previous prime is 22638659. The next prime is 22638673. The reversal of 22638668 is 86683622.

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, 217628 + ... + 217731.

It is an arithmetic number, because the mean of its divisors is an integer number (3555440).

Almost surely, 2^22638668 is an apocalyptic number.

It is an amenable number.

22638668 is a deficient number, since it is larger than the sum of its proper divisors (20026612).

22638668 is a wasteful number, since it uses less digits than its factorization.

22638668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435376 (or 435374 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 22638668 is about 4758.0109289492. The cubic root of 22638668 is about 282.8895838820.

The spelling of 22638668 in words is "twenty-two million, six hundred thirty-eight thousand, six hundred sixty-eight".