22288866 has 8 divisors (see below), whose sum is σ = 44577744. Its totient is φ = 7429620.

The previous prime is 22288859. The next prime is 22288867. The reversal of 22288866 is 66888222.

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

22288866 is an admirable number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22288867) by changing a digit.

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, 1857400 + ... + 1857411.

It is an arithmetic number, because the mean of its divisors is an integer number (5572218).

Almost surely, 2^22288866 is an apocalyptic number.

22288866 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.

22288866 is a wasteful number, since it uses less digits than its factorization.

22288866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714816.

The product of its digits is 147456, while the sum is 42.

The square root of 22288866 is about 4721.1085562609. The cubic root of 22288866 is about 281.4249889788.

The spelling of 22288866 in words is "twenty-two million, two hundred eighty-eight thousand, eight hundred sixty-six".