12808357 has 2 divisors, whose sum is σ = 12808358. Its totient is φ = 12808356.

The previous prime is 12808321. The next prime is 12808373. The reversal of 12808357 is 75380821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8116801 + 4691556 = 2849^2 + 2166^2 .

It is a cyclic number.

It is not a de Polignac number, because 12808357 - 2¹⁵ = 12775589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12808387) 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, 6404178 + 6404179.

It is an arithmetic number, because the mean of its divisors is an integer number (6404179).

Almost surely, 2^12808357 is an apocalyptic number.

It is an amenable number.

12808357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808357 is an equidigital number, since it uses as much as digits as its factorization.

12808357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 12808357 is about 3578.8764996853. The cubic root of 12808357 is about 233.9723163490.

The spelling of 12808357 in words is "twelve million, eight hundred eight thousand, three hundred fifty-seven".