22864218 has 64 divisors (see below), whose sum is σ = 53488512. Its totient is φ = 6451200.

The previous prime is 22864213. The next prime is 22864223. The reversal of 22864218 is 81246822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22864213) and next prime (22864223).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22864213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56818 + ... + 57218.

It is an arithmetic number, because the mean of its divisors is an integer number (835758).

Almost surely, 2^22864218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22864218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26744256).

22864218 is an abundant number, since it is smaller than the sum of its proper divisors (30624294).

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

22864218 is a wasteful number, since it uses less digits than its factorization.

22864218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 12288, while the sum is 33.

The square root of 22864218 is about 4781.6543162383. The cubic root of 22864218 is about 283.8259612785.

It can be divided in two parts, 228 and 64218, that added together give a palindrome (64446).

The spelling of 22864218 in words is "twenty-two million, eight hundred sixty-four thousand, two hundred eighteen".