12387238 has 8 divisors (see below), whose sum is σ = 18610488. Its totient is φ = 6183744.

The previous prime is 12387233. The next prime is 12387239. The reversal of 12387238 is 83278321.

12387238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387233) 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, 3256 + ... + 5947.

It is an arithmetic number, because the mean of its divisors is an integer number (2326311).

Almost surely, 2^12387238 is an apocalyptic number.

12387238 is a deficient number, since it is larger than the sum of its proper divisors (6223250).

12387238 is an equidigital number, since it uses as much as digits as its factorization.

12387238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878.

The product of its digits is 16128, while the sum is 34.

The square root of 12387238 is about 3519.5508236137. The cubic root of 12387238 is about 231.3794728584.

The spelling of 12387238 in words is "twelve million, three hundred eighty-seven thousand, two hundred thirty-eight".