12438936 has 48 divisors (see below), whose sum is σ = 34781760. Its totient is φ = 4011840.

The previous prime is 12438931. The next prime is 12438947. The reversal of 12438936 is 63983421.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12438936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555 + ... + 5018.

It is an arithmetic number, because the mean of its divisors is an integer number (724620).

Almost surely, 2^12438936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12438936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17390880).

12438936 is an abundant number, since it is smaller than the sum of its proper divisors (22342824).

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

12438936 is a wasteful number, since it uses less digits than its factorization.

12438936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616 (or 5609 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12438936 is about 3526.8875797224. The cubic root of 12438936 is about 231.7009126492.

It can be divided in two parts, 124 and 38936, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 12438936 in words is "twelve million, four hundred thirty-eight thousand, nine hundred thirty-six".