12635238 has 48 divisors (see below), whose sum is σ = 32076864. Its totient is φ = 3281040.

The previous prime is 12635221. The next prime is 12635243. The reversal of 12635238 is 83253621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1281 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (668268).

Almost surely, 2^12635238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12635238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16038432).

12635238 is an abundant number, since it is smaller than the sum of its proper divisors (19441626).

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

12635238 is a wasteful number, since it uses less digits than its factorization.

12635238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3930 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 12635238 is about 3554.6079952647. The cubic root of 12635238 is about 232.9134002498.

Adding to 12635238 its reverse (83253621), we get a palindrome (95888859).

The spelling of 12635238 in words is "twelve million, six hundred thirty-five thousand, two hundred thirty-eight".