12813136 has 40 divisors (see below), whose sum is σ = 28551744. Its totient is φ = 5456640.

The previous prime is 12813131. The next prime is 12813149. The reversal of 12813136 is 63131821.

It is a self number, because there is not a number n which added to its sum of digits gives 12813136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25851 + ... + 26341.

Almost surely, 2^12813136 is an apocalyptic number.

12813136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12813136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14275872).

12813136 is an abundant number, since it is smaller than the sum of its proper divisors (15738608).

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

12813136 is a wasteful number, since it uses less digits than its factorization.

12813136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 733 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 12813136 is about 3579.5441050503. The cubic root of 12813136 is about 234.0014123177.

Adding to 12813136 its reverse (63131821), we get a palindrome (75944957).

The spelling of 12813136 in words is "twelve million, eight hundred thirteen thousand, one hundred thirty-six".