12812305 has 32 divisors (see below), whose sum is σ = 18102528. Its totient is φ = 8601600.

The previous prime is 12812297. The next prime is 12812329. The reversal of 12812305 is 50321821.

It is not a de Polignac number, because 12812305 - 2³ = 12812297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66289 + ... + 66481.

It is an arithmetic number, because the mean of its divisors is an integer number (565704).

Almost surely, 2^12812305 is an apocalyptic number.

It is an amenable number.

12812305 is a deficient number, since it is larger than the sum of its proper divisors (5290223).

12812305 is a wasteful number, since it uses less digits than its factorization.

12812305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12812305 is about 3579.4280269339. The cubic root of 12812305 is about 233.9963534630.

The spelling of 12812305 in words is "twelve million, eight hundred twelve thousand, three hundred five".