12811814 has 8 divisors (see below), whose sum is σ = 20229240. Its totient is φ = 6068736.

The previous prime is 12811811. The next prime is 12811847. The reversal of 12811814 is 41811821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 168539 + ... + 168614.

It is an arithmetic number, because the mean of its divisors is an integer number (2528655).

Almost surely, 2^12811814 is an apocalyptic number.

12811814 is a deficient number, since it is larger than the sum of its proper divisors (7417426).

12811814 is a wasteful number, since it uses less digits than its factorization.

12811814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337174.

The product of its digits is 512, while the sum is 26.

The square root of 12811814 is about 3579.3594398998. The cubic root of 12811814 is about 233.9933643137.

The spelling of 12811814 in words is "twelve million, eight hundred eleven thousand, eight hundred fourteen".