12728033 has 2 divisors, whose sum is σ = 12728034. Its totient is φ = 12728032.

The previous prime is 12728029. The next prime is 12728041. The reversal of 12728033 is 33082721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12475024 + 253009 = 3532^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 12728033 - 2² = 12728029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12727993 and 12728011.

It is not a weakly prime, because it can be changed into another prime (12728063) 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, 6364016 + 6364017.

It is an arithmetic number, because the mean of its divisors is an integer number (6364017).

Almost surely, 2^12728033 is an apocalyptic number.

It is an amenable number.

12728033 is a deficient number, since it is larger than the sum of its proper divisors (1).

12728033 is an equidigital number, since it uses as much as digits as its factorization.

12728033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12728033 is about 3567.6368929587. The cubic root of 12728033 is about 233.4821932201.

The spelling of 12728033 in words is "twelve million, seven hundred twenty-eight thousand, thirty-three".