22243866 has 16 divisors (see below), whose sum is σ = 45152544. Its totient is φ = 7303824.

The previous prime is 22243849. The next prime is 22243867. The reversal of 22243866 is 66834222.

It is not an unprimeable number, because it can be changed into a prime (22243867) 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, 27265 + ... + 28068.

It is an arithmetic number, because the mean of its divisors is an integer number (2822034).

Almost surely, 2^22243866 is an apocalyptic number.

22243866 is an abundant number, since it is smaller than the sum of its proper divisors (22908678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22243866 is a wasteful number, since it uses less digits than its factorization.

22243866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55405.

The product of its digits is 27648, while the sum is 33.

The square root of 22243866 is about 4716.3403185097. The cubic root of 22243866 is about 281.2354674960.

The spelling of 22243866 in words is "twenty-two million, two hundred forty-three thousand, eight hundred sixty-six".