12481136 has 40 divisors (see below), whose sum is σ = 25727520. Its totient is φ = 5854464.

The previous prime is 12481123. The next prime is 12481153. The reversal of 12481136 is 63118421.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16805 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (643188).

Almost surely, 2^12481136 is an apocalyptic number.

12481136 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 12481136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12863760).

12481136 is an abundant number, since it is smaller than the sum of its proper divisors (13246384).

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

12481136 is a wasteful number, since it uses less digits than its factorization.

12481136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 795 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 12481136 is about 3532.8651262113. The cubic root of 12481136 is about 231.9626376615.

Adding to 12481136 its reverse (63118421), we get a palindrome (75599557).

The spelling of 12481136 in words is "twelve million, four hundred eighty-one thousand, one hundred thirty-six".