12756744 has 256 divisors, whose sum is σ = 48384000. Its totient is φ = 3006720.

The previous prime is 12756739. The next prime is 12756763. The reversal of 12756744 is 44765721.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (47040) is a multiple of the sum of its prime factors (105).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 12756699 and 12756708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216187 + ... + 216245.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

Almost surely, 2^12756744 is an apocalyptic number.

12756744 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 12756744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

12756744 is an abundant number, since it is smaller than the sum of its proper divisors (35627256).

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

12756744 is a wasteful number, since it uses less digits than its factorization.

12756744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 95 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 12756744 is about 3571.6584383169. The cubic root of 12756744 is about 233.6576189418.

The spelling of 12756744 in words is "twelve million, seven hundred fifty-six thousand, seven hundred forty-four".