12381238 has 16 divisors (see below), whose sum is σ = 18994320. Its totient is φ = 6051456.

The previous prime is 12381227. The next prime is 12381319. The reversal of 12381238 is 83218321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19693 + ... + 20311.

It is an arithmetic number, because the mean of its divisors is an integer number (1187145).

Almost surely, 2^12381238 is an apocalyptic number.

12381238 is a deficient number, since it is larger than the sum of its proper divisors (6613082).

12381238 is a wasteful number, since it uses less digits than its factorization.

12381238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831.

The product of its digits is 2304, while the sum is 28.

The square root of 12381238 is about 3518.6983388748. The cubic root of 12381238 is about 231.3421091070.

Adding to 12381238 its reverse (83218321), we get a palindrome (95599559).

The spelling of 12381238 in words is "twelve million, three hundred eighty-one thousand, two hundred thirty-eight".