22556638 has 8 divisors (see below), whose sum is σ = 36437688. Its totient is φ = 10410744.

The previous prime is 22556627. The next prime is 22556659. The reversal of 22556638 is 83665522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22556597 and 22556606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433756 + ... + 433807.

It is an arithmetic number, because the mean of its divisors is an integer number (4554711).

Almost surely, 2^22556638 is an apocalyptic number.

22556638 is a deficient number, since it is larger than the sum of its proper divisors (13881050).

22556638 is a wasteful number, since it uses less digits than its factorization.

22556638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867578.

The product of its digits is 86400, while the sum is 37.

The square root of 22556638 is about 4749.3829072839. The cubic root of 22556638 is about 282.5474919503.

The spelling of 22556638 in words is "twenty-two million, five hundred fifty-six thousand, six hundred thirty-eight".