12729834 has 24 divisors (see below), whose sum is σ = 29703492. Its totient is φ = 3916800.

The previous prime is 12729817. The next prime is 12729839. The reversal of 12729834 is 43892721.

It can be written as a sum of positive squares in 2 ways, for example, as 12638025 + 91809 = 3555^2 + 303^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12729839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26967 + ... + 27434.

Almost surely, 2^12729834 is an apocalyptic number.

12729834 is an abundant number, since it is smaller than the sum of its proper divisors (16973658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12729834 is a wasteful number, since it uses less digits than its factorization.

12729834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54422 (or 54419 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12729834 is about 3567.8892920044. The cubic root of 12729834 is about 233.4932051756.

The spelling of 12729834 in words is "twelve million, seven hundred twenty-nine thousand, eight hundred thirty-four".