22166266 has 16 divisors (see below), whose sum is σ = 36420840. Its totient is φ = 10071040.

The previous prime is 22166257. The next prime is 22166267. The reversal of 22166266 is 66266122.

It can be written as a sum of positive squares in 4 ways, for example, as 16573041 + 5593225 = 4071^2 + 2365^2 .

It is not an unprimeable number, because it can be changed into a prime (22166267) 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, 10255 + ... + 12226.

Almost surely, 2^22166266 is an apocalyptic number.

22166266 is a deficient number, since it is larger than the sum of its proper divisors (14254574).

22166266 is a wasteful number, since it uses less digits than its factorization.

22166266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22529.

The product of its digits is 10368, while the sum is 31.

The square root of 22166266 is about 4708.1064134108. The cubic root of 22166266 is about 280.9080468961.

The spelling of 22166266 in words is "twenty-two million, one hundred sixty-six thousand, two hundred sixty-six".