12805443 has 48 divisors (see below), whose sum is σ = 22513920. Its totient is φ = 6858432.

The previous prime is 12805427. The next prime is 12805453. The reversal of 12805443 is 34450821.

It is not a de Polignac number, because 12805443 - 2⁴ = 12805427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12805423) 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 47 ways as a sum of consecutive naturals, for example, 78480 + ... + 78642.

It is an arithmetic number, because the mean of its divisors is an integer number (469040).

Almost surely, 2^12805443 is an apocalyptic number.

12805443 is a deficient number, since it is larger than the sum of its proper divisors (9708477).

12805443 is a wasteful number, since it uses less digits than its factorization.

12805443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 12805443 is about 3578.4693655249. The cubic root of 12805443 is about 233.9545715011.

The spelling of 12805443 in words is "twelve million, eight hundred five thousand, four hundred forty-three".