12266289 has 16 divisors (see below), whose sum is σ = 20768640. Its totient is φ = 7009200.

The previous prime is 12266281. The next prime is 12266311. The reversal of 12266289 is 98266221.

It is a happy number.

12266289 is a `hidden beast` number, since 1 + 2 + 26 + 628 + 9 = 666.

It is not a de Polignac number, because 12266289 - 2³ = 12266281 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12266281) 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 15 ways as a sum of consecutive naturals, for example, 32262 + ... + 32639.

It is an arithmetic number, because the mean of its divisors is an integer number (1298040).

Almost surely, 2^12266289 is an apocalyptic number.

It is an amenable number.

12266289 is a deficient number, since it is larger than the sum of its proper divisors (8502351).

12266289 is an equidigital number, since it uses as much as digits as its factorization.

12266289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64917 (or 64911 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 12266289 is about 3502.3262269526. The cubic root of 12266289 is about 230.6239453980.

The spelling of 12266289 in words is "twelve million, two hundred sixty-six thousand, two hundred eighty-nine".