22272266 has 16 divisors (see below), whose sum is σ = 34957440. Its totient is φ = 10631520.

The previous prime is 22272253. The next prime is 22272269. The reversal of 22272266 is 66227222.

It is not an unprimeable number, because it can be changed into a prime (22272269) 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, 965 + ... + 6743.

It is an arithmetic number, because the mean of its divisors is an integer number (2184840).

Almost surely, 2^22272266 is an apocalyptic number.

22272266 is a deficient number, since it is larger than the sum of its proper divisors (12685174).

22272266 is a wasteful number, since it uses less digits than its factorization.

22272266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869.

The product of its digits is 8064, while the sum is 29.

The square root of 22272266 is about 4719.3501671311. The cubic root of 22272266 is about 281.3551063288.

Adding to 22272266 its reverse (66227222), we get a palindrome (88499488).

The spelling of 22272266 in words is "twenty-two million, two hundred seventy-two thousand, two hundred sixty-six".