12738422 has 8 divisors (see below), whose sum is σ = 19293456. Its totient is φ = 6307272.

The previous prime is 12738421. The next prime is 12738431. The reversal of 12738422 is 22483721.

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 (12738421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30713 + ... + 31124.

It is an arithmetic number, because the mean of its divisors is an integer number (2411682).

Almost surely, 2^12738422 is an apocalyptic number.

12738422 is a deficient number, since it is larger than the sum of its proper divisors (6555034).

12738422 is a wasteful number, since it uses less digits than its factorization.

12738422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61942.

The product of its digits is 5376, while the sum is 29.

The square root of 12738422 is about 3569.0926017687. The cubic root of 12738422 is about 233.5457009866.

The spelling of 12738422 in words is "twelve million, seven hundred thirty-eight thousand, four hundred twenty-two".