22143066 has 64 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 6184640.

The previous prime is 22143053. The next prime is 22143071. The reversal of 22143066 is 66034122.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 43771 + ... + 44273.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^22143066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22143066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127360).

22143066 is an abundant number, since it is smaller than the sum of its proper divisors (30111654).

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

22143066 is a wasteful number, since it uses less digits than its factorization.

22143066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22143066 is about 4705.6419328291. The cubic root of 22143066 is about 280.8100099109.

Adding to 22143066 its reverse (66034122), we get a palindrome (88177188).

The spelling of 22143066 in words is "twenty-two million, one hundred forty-three thousand, sixty-six".