12272266 has 8 divisors (see below), whose sum is σ = 19491300. Its totient is φ = 5775168.

The previous prime is 12272263. The next prime is 12272269. The reversal of 12272266 is 66227221.

It is an interprime number because it is at equal distance from previous prime (12272263) and next prime (12272269).

It can be written as a sum of positive squares in 2 ways, for example, as 11937025 + 335241 = 3455^2 + 579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12272261) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 180441 + ... + 180508.

Almost surely, 2^12272266 is an apocalyptic number.

12272266 is a deficient number, since it is larger than the sum of its proper divisors (7219034).

12272266 is a wasteful number, since it uses less digits than its factorization.

12272266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360968.

The product of its digits is 4032, while the sum is 28.

The square root of 12272266 is about 3503.1794130475. The cubic root of 12272266 is about 230.6613980591.

Adding to 12272266 its reverse (66227221), we get a palindrome (78499487).

The spelling of 12272266 in words is "twelve million, two hundred seventy-two thousand, two hundred sixty-six".