12516266 has 12 divisors (see below), whose sum is σ = 21839778. Its totient is φ = 5364072.

The previous prime is 12516263. The next prime is 12516271. The reversal of 12516266 is 66261521.

It can be written as a sum of positive squares in only one way, i.e., 7958041 + 4558225 = 2821^2 + 2135^2 .

It is not an unprimeable number, because it can be changed into a prime (12516263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63761 + ... + 63956.

Almost surely, 2^12516266 is an apocalyptic number.

12516266 is a deficient number, since it is larger than the sum of its proper divisors (9323512).

12516266 is a wasteful number, since it uses less digits than its factorization.

12516266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127733 (or 127726 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 12516266 is about 3537.8335178468. The cubic root of 12516266 is about 232.1800648256.

Adding to 12516266 its reverse (66261521), we get a palindrome (78777787).

The spelling of 12516266 in words is "twelve million, five hundred sixteen thousand, two hundred sixty-six".