12797266 has 4 divisors (see below), whose sum is σ = 19195902. Its totient is φ = 6398632.

The previous prime is 12797261. The next prime is 12797297. The reversal of 12797266 is 66279721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66279721 = 23 ⋅2881727.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 16641 = 3575^2 + 129^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12797261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199315 + ... + 3199318.

Almost surely, 2^12797266 is an apocalyptic number.

12797266 is the 2263-rd centered pentagonal number.

12797266 is a deficient number, since it is larger than the sum of its proper divisors (6398636).

12797266 is an equidigital number, since it uses as much as digits as its factorization.

12797266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398635.

The product of its digits is 63504, while the sum is 40.

The square root of 12797266 is about 3577.3266554789. The cubic root of 12797266 is about 233.9047631534.

The spelling of 12797266 in words is "twelve million, seven hundred ninety-seven thousand, two hundred sixty-six".