12928717 has 2 divisors, whose sum is σ = 12928718. Its totient is φ = 12928716.

The previous prime is 12928711. The next prime is 12928723. The reversal of 12928717 is 71782921.

12928717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12928711) and next prime (12928723).

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 11881 = 3594^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12928717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12928711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6464358 + 6464359.

It is an arithmetic number, because the mean of its divisors is an integer number (6464359).

Almost surely, 2^12928717 is an apocalyptic number.

It is an amenable number.

12928717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12928717 is an equidigital number, since it uses as much as digits as its factorization.

12928717 is an evil number, because the sum of its binary digits is even.

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

The square root of 12928717 is about 3595.6525138005. The cubic root of 12928717 is about 234.7029111312.

The spelling of 12928717 in words is "twelve million, nine hundred twenty-eight thousand, seven hundred seventeen".