12828681 has 12 divisors (see below), whose sum is σ = 18562752. Its totient is φ = 8537496.

The previous prime is 12828679. The next prime is 12828689. The reversal of 12828681 is 18682821.

It is not a de Polignac number, because 12828681 - 2¹ = 12828679 is a prime.

It is a super-3 number, since 3×12828681³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12828689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7180 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (1546896).

Almost surely, 2^12828681 is an apocalyptic number.

It is an amenable number.

12828681 is a deficient number, since it is larger than the sum of its proper divisors (5734071).

12828681 is a wasteful number, since it uses less digits than its factorization.

12828681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500 (or 2497 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 12828681 is about 3581.7148127678. The cubic root of 12828681 is about 234.0960048751.

The spelling of 12828681 in words is "twelve million, eight hundred twenty-eight thousand, six hundred eighty-one".