12838706 has 24 divisors (see below), whose sum is σ = 21165300. Its totient is φ = 5820416.

The previous prime is 12838691. The next prime is 12838733. The reversal of 12838706 is 60783821.

It can be written as a sum of positive squares in 6 ways, for example, as 9247681 + 3591025 = 3041^2 + 1895^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 28370 + ... + 28818.

Almost surely, 2^12838706 is an apocalyptic number.

12838706 is a deficient number, since it is larger than the sum of its proper divisors (8326594).

12838706 is a wasteful number, since it uses less digits than its factorization.

12838706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12838706 is about 3583.1140087918. The cubic root of 12838706 is about 234.1569672715.

The spelling of 12838706 in words is "twelve million, eight hundred thirty-eight thousand, seven hundred six".