12729296 has 10 divisors (see below), whose sum is σ = 24663042. Its totient is φ = 6364640.

The previous prime is 12729293. The next prime is 12729317. The reversal of 12729296 is 69292721.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 55696 = 3560^2 + 236^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729293) 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, 397775 + ... + 397806.

Almost surely, 2^12729296 is an apocalyptic number.

12729296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12729296 is a deficient number, since it is larger than the sum of its proper divisors (11933746).

12729296 is an equidigital number, since it uses as much as digits as its factorization.

12729296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795589 (or 795583 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 12729296 is about 3567.8138964918. The cubic root of 12729296 is about 233.4899157608.

The spelling of 12729296 in words is "twelve million, seven hundred twenty-nine thousand, two hundred ninety-six".