12816835 has 4 divisors (see below), whose sum is σ = 15380208. Its totient is φ = 10253464.

The previous prime is 12816821. The next prime is 12816841. The reversal of 12816835 is 53861821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12816835 - 2¹⁷ = 12685763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12816835.

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 3 ways as a sum of consecutive naturals, for example, 1281679 + ... + 1281688.

It is an arithmetic number, because the mean of its divisors is an integer number (3845052).

Almost surely, 2^12816835 is an apocalyptic number.

12816835 is a deficient number, since it is larger than the sum of its proper divisors (2563373).

12816835 is an equidigital number, since it uses as much as digits as its factorization.

12816835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563372.

The product of its digits is 11520, while the sum is 34.

The square root of 12816835 is about 3580.0607536744. The cubic root of 12816835 is about 234.0239279595.

The spelling of 12816835 in words is "twelve million, eight hundred sixteen thousand, eight hundred thirty-five".