12756385 has 8 divisors (see below), whose sum is σ = 15517800. Its totient is φ = 10065024.

The previous prime is 12756343. The next prime is 12756389. The reversal of 12756385 is 58365721.

It can be written as a sum of positive squares in 4 ways, for example, as 54289 + 12702096 = 233^2 + 3564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12756385 - 2¹¹ = 12754337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12756389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17110 + ... + 17839.

It is an arithmetic number, because the mean of its divisors is an integer number (1939725).

Almost surely, 2^12756385 is an apocalyptic number.

It is an amenable number.

12756385 is a deficient number, since it is larger than the sum of its proper divisors (2761415).

12756385 is an equidigital number, since it uses as much as digits as its factorization.

12756385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35027.

The product of its digits is 50400, while the sum is 37.

The square root of 12756385 is about 3571.6081811979. The cubic root of 12756385 is about 233.6554270588.

The spelling of 12756385 in words is "twelve million, seven hundred fifty-six thousand, three hundred eighty-five".