12728351 has 2 divisors, whose sum is σ = 12728352. Its totient is φ = 12728350.

The previous prime is 12728341. The next prime is 12728363. The reversal of 12728351 is 15382721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12728351 - 2¹⁰ = 12727327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12728311) by changing a digit.

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 as a sum of consecutive naturals, namely, 6364175 + 6364176.

It is an arithmetic number, because the mean of its divisors is an integer number (6364176).

Almost surely, 2^12728351 is an apocalyptic number.

12728351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12728351 is an equidigital number, since it uses as much as digits as its factorization.

12728351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 12728351 is about 3567.6814599961. The cubic root of 12728351 is about 233.4841376609.

The spelling of 12728351 in words is "twelve million, seven hundred twenty-eight thousand, three hundred fifty-one".