12808547 has 4 divisors (see below), whose sum is σ = 12815856. Its totient is φ = 12801240.

The previous prime is 12808529. The next prime is 12808583. The reversal of 12808547 is 74580821.

12808547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74580821 = 7 ⋅10654403.

It is a cyclic number.

It is not a de Polignac number, because 12808547 - 2⁶ = 12808483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12808847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722 + ... + 5112.

It is an arithmetic number, because the mean of its divisors is an integer number (3203964).

Almost surely, 2^12808547 is an apocalyptic number.

12808547 is a deficient number, since it is larger than the sum of its proper divisors (7309).

12808547 is an equidigital number, since it uses as much as digits as its factorization.

12808547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 12808547 is about 3578.9030442302. The cubic root of 12808547 is about 233.9734732635.

The spelling of 12808547 in words is "twelve million, eight hundred eight thousand, five hundred forty-seven".