12768145 has 16 divisors (see below), whose sum is σ = 16949520. Its totient is φ = 9172224.

The previous prime is 12768137. The next prime is 12768157. The reversal of 12768145 is 54186721.

It can be written as a sum of positive squares in 8 ways, for example, as 1957201 + 10810944 = 1399^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 12768145 - 2³ = 12768137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12768145.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 250 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (1059345).

Almost surely, 2^12768145 is an apocalyptic number.

It is an amenable number.

12768145 is a deficient number, since it is larger than the sum of its proper divisors (4181375).

12768145 is a wasteful number, since it uses less digits than its factorization.

12768145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its digits is 13440, while the sum is 34.

The square root of 12768145 is about 3573.2541191469. The cubic root of 12768145 is about 233.7272066386.

The spelling of 12768145 in words is "twelve million, seven hundred sixty-eight thousand, one hundred forty-five".