12729776 has 20 divisors (see below), whose sum is σ = 25331712. Its totient is φ = 6192576.

The previous prime is 12729727. The next prime is 12729779. The reversal of 12729776 is 67792721.

It is not an unprimeable number, because it can be changed into a prime (12729779) 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 in 3 ways as a sum of consecutive naturals, for example, 10160 + ... + 11343.

Almost surely, 2^12729776 is an apocalyptic number.

12729776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12729776 is a deficient number, since it is larger than the sum of its proper divisors (12601936).

12729776 is a wasteful number, since it uses less digits than its factorization.

12729776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21548 (or 21542 counting only the distinct ones).

The product of its digits is 74088, while the sum is 41.

The square root of 12729776 is about 3567.8811639403. The cubic root of 12729776 is about 233.4928505591.

The spelling of 12729776 in words is "twelve million, seven hundred twenty-nine thousand, seven hundred seventy-six".