12816833 has 4 divisors (see below), whose sum is σ = 12848580. Its totient is φ = 12785088.

The previous prime is 12816821. The next prime is 12816841. The reversal of 12816833 is 33861821.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11992369 + 824464 = 3463^2 + 908^2 .

It is a cyclic number.

It is not a de Polignac number, because 12816833 - 2⁸ = 12816577 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 12816833.

It is not an unprimeable number, because it can be changed into a prime (12816863) 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, 15260 + ... + 16077.

It is an arithmetic number, because the mean of its divisors is an integer number (3212145).

Almost surely, 2^12816833 is an apocalyptic number.

It is an amenable number.

12816833 is a deficient number, since it is larger than the sum of its proper divisors (31747).

12816833 is an equidigital number, since it uses as much as digits as its factorization.

12816833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31746.

The product of its digits is 6912, while the sum is 32.

The square root of 12816833 is about 3580.0604743496. The cubic root of 12816833 is about 234.0239157868.

It can be divided in two parts, 128 and 16833, that added together give a palindrome (16961).

The spelling of 12816833 in words is "twelve million, eight hundred sixteen thousand, eight hundred thirty-three".