12738236 has 36 divisors (see below), whose sum is σ = 27463968. Its totient is φ = 5136768.

The previous prime is 12738223. The next prime is 12738239. The reversal of 12738236 is 63283721.

It is a happy number.

It is a super-3 number, since 3×12738236³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1421 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (762888).

Almost surely, 2^12738236 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 12738236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13731984).

12738236 is an abundant number, since it is smaller than the sum of its proper divisors (14725732).

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

12738236 is a wasteful number, since it uses less digits than its factorization.

12738236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858 (or 3849 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 12738236 is about 3569.0665446304. The cubic root of 12738236 is about 233.5445642757.

The spelling of 12738236 in words is "twelve million, seven hundred thirty-eight thousand, two hundred thirty-six".