12757736 has 16 divisors (see below), whose sum is σ = 24372900. Its totient is φ = 6258304.

The previous prime is 12757649. The next prime is 12757739. The reversal of 12757736 is 63775721.

It can be written as a sum of positive squares in 2 ways, for example, as 12602500 + 155236 = 3550^2 + 394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12757736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12757739) 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 3 ways as a sum of consecutive naturals, for example, 14621 + ... + 15468.

Almost surely, 2^12757736 is an apocalyptic number.

It is an amenable number.

12757736 is a deficient number, since it is larger than the sum of its proper divisors (11615164).

12757736 is a wasteful number, since it uses less digits than its factorization.

12757736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30148 (or 30144 counting only the distinct ones).

The product of its digits is 61740, while the sum is 38.

The square root of 12757736 is about 3571.7973066791. The cubic root of 12757736 is about 233.6636754076.

The spelling of 12757736 in words is "twelve million, seven hundred fifty-seven thousand, seven hundred thirty-six".