12728875 has 16 divisors (see below), whose sum is σ = 16099200. Its totient is φ = 10046400.

The previous prime is 12728857. The next prime is 12728893. The reversal of 12728875 is 57882721.

It is an interprime number because it is at equal distance from previous prime (12728857) and next prime (12728893).

It is not a de Polignac number, because 12728875 - 2⁷ = 12728747 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9231 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (1006200).

Almost surely, 2^12728875 is an apocalyptic number.

12728875 is a deficient number, since it is larger than the sum of its proper divisors (3370325).

12728875 is an equidigital number, since it uses as much as digits as its factorization.

12728875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1373 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 12728875 is about 3567.7548962898. The cubic root of 12728875 is about 233.4873416373.

The spelling of 12728875 in words is "twelve million, seven hundred twenty-eight thousand, eight hundred seventy-five".