12811344 has 120 divisors (see below), whose sum is σ = 41559840. Its totient is φ = 3370752.

The previous prime is 12811343. The next prime is 12811349. The reversal of 12811344 is 44311821.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30367 + ... + 30785.

It is an arithmetic number, because the mean of its divisors is an integer number (346332).

Almost surely, 2^12811344 is an apocalyptic number.

12811344 is a gapful number since it is divisible by the number (14) 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 12811344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20779920).

12811344 is an abundant number, since it is smaller than the sum of its proper divisors (28748496).

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

12811344 is a wasteful number, since it uses less digits than its factorization.

12811344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 444 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 12811344 is about 3579.2937850922. The cubic root of 12811344 is about 233.9905029384.

The spelling of 12811344 in words is "twelve million, eight hundred eleven thousand, three hundred forty-four".