12638494 has 8 divisors (see below), whose sum is σ = 20681208. Its totient is φ = 5744760.

The previous prime is 12638491. The next prime is 12638501. The reversal of 12638494 is 49483621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638491) 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, 287217 + ... + 287260.

It is an arithmetic number, because the mean of its divisors is an integer number (2585151).

Almost surely, 2^12638494 is an apocalyptic number.

12638494 is a deficient number, since it is larger than the sum of its proper divisors (8042714).

12638494 is a wasteful number, since it uses less digits than its factorization.

12638494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574490.

The product of its digits is 41472, while the sum is 37.

The square root of 12638494 is about 3555.0659628198. The cubic root of 12638494 is about 232.9334051731.

The spelling of 12638494 in words is "twelve million, six hundred thirty-eight thousand, four hundred ninety-four".