12687938 has 8 divisors (see below), whose sum is σ = 19116432. Its totient is φ = 6315796.

The previous prime is 12687889. The next prime is 12687943. The reversal of 12687938 is 83978621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12687938³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13520 + ... + 14427.

It is an arithmetic number, because the mean of its divisors is an integer number (2389554).

Almost surely, 2^12687938 is an apocalyptic number.

12687938 is a deficient number, since it is larger than the sum of its proper divisors (6428494).

12687938 is a wasteful number, since it uses less digits than its factorization.

12687938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28176.

The product of its digits is 145152, while the sum is 44.

The square root of 12687938 is about 3562.0131948099. The cubic root of 12687938 is about 233.2367686591.

The spelling of 12687938 in words is "twelve million, six hundred eighty-seven thousand, nine hundred thirty-eight".