22563887 has 8 divisors (see below), whose sum is σ = 23798400. Its totient is φ = 21334104.

The previous prime is 22563859. The next prime is 22563907. The reversal of 22563887 is 78836522.

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

It is a cyclic number.

It is not a de Polignac number, because 22563887 - 2⁸ = 22563631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22563847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13238 + ... + 14844.

It is an arithmetic number, because the mean of its divisors is an integer number (2974800).

Almost surely, 2^22563887 is an apocalyptic number.

22563887 is a deficient number, since it is larger than the sum of its proper divisors (1234513).

22563887 is a wasteful number, since it uses less digits than its factorization.

22563887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365.

The product of its digits is 161280, while the sum is 41.

The square root of 22563887 is about 4750.1459977563. The cubic root of 22563887 is about 282.5777560260.

The spelling of 22563887 in words is "twenty-two million, five hundred sixty-three thousand, eight hundred eighty-seven".