12744128 has 28 divisors (see below), whose sum is σ = 25539192. Its totient is φ = 6309120.

The previous prime is 12744103. The next prime is 12744143. The reversal of 12744128 is 82144721.

It is a self number, because there is not a number n which added to its sum of digits gives 12744128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918 + ... + 7778.

It is an arithmetic number, because the mean of its divisors is an integer number (912114).

Almost surely, 2^12744128 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 12744128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12769596).

12744128 is an abundant number, since it is smaller than the sum of its proper divisors (12795064).

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

12744128 is a wasteful number, since it uses less digits than its factorization.

12744128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1970 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 12744128 is about 3569.8918751133. The cubic root of 12744128 is about 233.5805669704.

Adding to 12744128 its reverse (82144721), we get a palindrome (94888849).

The spelling of 12744128 in words is "twelve million, seven hundred forty-four thousand, one hundred twenty-eight".