12728179 has 2 divisors, whose sum is σ = 12728180. Its totient is φ = 12728178.

The previous prime is 12728167. The next prime is 12728203. The reversal of 12728179 is 97182721.

It is a weak prime.

It is an emirp because it is prime and its reverse (97182721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12728179 - 2¹⁵ = 12695411 is a prime.

It is not a weakly prime, because it can be changed into another prime (12728159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364089 + 6364090.

It is an arithmetic number, because the mean of its divisors is an integer number (6364090).

Almost surely, 2^12728179 is an apocalyptic number.

12728179 is a deficient number, since it is larger than the sum of its proper divisors (1).

12728179 is an equidigital number, since it uses as much as digits as its factorization.

12728179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 37.

The square root of 12728179 is about 3567.6573546236. The cubic root of 12728179 is about 233.4830859548.

The spelling of 12728179 in words is "twelve million, seven hundred twenty-eight thousand, one hundred seventy-nine".