12810505 has 8 divisors (see below), whose sum is σ = 15391872. Its totient is φ = 10235568.

The previous prime is 12810481. The next prime is 12810521. The reversal of 12810505 is 50501821.

12810505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12810505 - 2⁷ = 12810377 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6574 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (1923984).

Almost surely, 2^12810505 is an apocalyptic number.

It is an amenable number.

12810505 is a deficient number, since it is larger than the sum of its proper divisors (2581367).

12810505 is a wasteful number, since it uses less digits than its factorization.

12810505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12810505 is about 3579.1765812823. The cubic root of 12810505 is about 233.9853949050.

The spelling of 12810505 in words is "twelve million, eight hundred ten thousand, five hundred five".