12308238 has 96 divisors (see below), whose sum is σ = 31168800. Its totient is φ = 3483648.

The previous prime is 12308237. The next prime is 12308249. The reversal of 12308238 is 83280321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12308237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168570 + ... + 168642.

It is an arithmetic number, because the mean of its divisors is an integer number (324675).

Almost surely, 2^12308238 is an apocalyptic number.

12308238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12308238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15584400).

12308238 is an abundant number, since it is smaller than the sum of its proper divisors (18860562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12308238 is a wasteful number, since it uses less digits than its factorization.

12308238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 12308238 is about 3508.3098494859. The cubic root of 12308238 is about 230.8865468628.

Adding to 12308238 its reverse (83280321), we get a palindrome (95588559).

The spelling of 12308238 in words is "twelve million, three hundred eight thousand, two hundred thirty-eight".