12667138 has 16 divisors (see below), whose sum is σ = 21070080. Its totient is φ = 5662800.

The previous prime is 12667121. The next prime is 12667141. The reversal of 12667138 is 83176621.

It is a super-2 number, since 2×12667138² = 320912770222088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3378 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (1316880).

Almost surely, 2^12667138 is an apocalyptic number.

12667138 is a deficient number, since it is larger than the sum of its proper divisors (8402942).

12667138 is a wasteful number, since it uses less digits than its factorization.

12667138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513.

The product of its digits is 12096, while the sum is 34.

The square root of 12667138 is about 3559.0923000113. The cubic root of 12667138 is about 233.1092465402.

The spelling of 12667138 in words is "twelve million, six hundred sixty-seven thousand, one hundred thirty-eight".