12816205 has 8 divisors (see below), whose sum is σ = 15501312. Its totient is φ = 10171728.

The previous prime is 12816191. The next prime is 12816211. The reversal of 12816205 is 50261821.

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 12816205 - 2⁷ = 12816077 is a prime.

It is a super-2 number, since 2×12816205² = 328510221204050, which contains 22 as substring.

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 12816205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9457 + ... + 10726.

It is an arithmetic number, because the mean of its divisors is an integer number (1937664).

Almost surely, 2^12816205 is an apocalyptic number.

It is an amenable number.

12816205 is a deficient number, since it is larger than the sum of its proper divisors (2685107).

12816205 is a wasteful number, since it uses less digits than its factorization.

12816205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20315.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12816205 is about 3579.9727652595. The cubic root of 12816205 is about 234.0200934848.

The spelling of 12816205 in words is "twelve million, eight hundred sixteen thousand, two hundred five".