12828689 has 2 divisors, whose sum is σ = 12828690. Its totient is φ = 12828688.

The previous prime is 12828679. The next prime is 12828707. The reversal of 12828689 is 98682821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6801664 + 6027025 = 2608^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 12828689 - 2²⁰ = 11780113 is a prime.

It is a super-3 number, since 3×12828689³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12828619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6414344 + 6414345.

It is an arithmetic number, because the mean of its divisors is an integer number (6414345).

Almost surely, 2^12828689 is an apocalyptic number.

It is an amenable number.

12828689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12828689 is an equidigital number, since it uses as much as digits as its factorization.

12828689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 44.

The square root of 12828689 is about 3581.7159295511. The cubic root of 12828689 is about 234.0960535361.

The spelling of 12828689 in words is "twelve million, eight hundred twenty-eight thousand, six hundred eighty-nine".