12816918 has 12 divisors (see below), whose sum is σ = 27770028. Its totient is φ = 4272300.

The previous prime is 12816917. The next prime is 12816931. The reversal of 12816918 is 81961821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 356008 + ... + 356043.

It is an arithmetic number, because the mean of its divisors is an integer number (2314169).

Almost surely, 2^12816918 is an apocalyptic number.

12816918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12816918 is an abundant number, since it is smaller than the sum of its proper divisors (14953110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12816918 is a wasteful number, since it uses less digits than its factorization.

12816918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712059 (or 712056 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 12816918 is about 3580.0723456377. The cubic root of 12816918 is about 234.0244331270.

The spelling of 12816918 in words is "twelve million, eight hundred sixteen thousand, nine hundred eighteen".