12928613 has 2 divisors, whose sum is σ = 12928614. Its totient is φ = 12928612.

The previous prime is 12928583. The next prime is 12928621. The reversal of 12928613 is 31682921.

12928613 = 2542² + 2543².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 6461764 = 2543^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 12928613 - 2⁶ = 12928549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12928613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12928673) 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, 6464306 + 6464307.

It is an arithmetic number, because the mean of its divisors is an integer number (6464307).

Almost surely, 2^12928613 is an apocalyptic number.

12928613 is the 2543-rd centered square number.

It is an amenable number.

12928613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12928613 is an equidigital number, since it uses as much as digits as its factorization.

12928613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 12928613 is about 3595.6380518623. The cubic root of 12928613 is about 234.7022818043.

The spelling of 12928613 in words is "twelve million, nine hundred twenty-eight thousand, six hundred thirteen".