12738318 has 8 divisors (see below), whose sum is σ = 25476648. Its totient is φ = 4246104.

The previous prime is 12738311. The next prime is 12738347. The reversal of 12738318 is 81383721.

12738318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

12738318 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738311) 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, 1061521 + ... + 1061532.

It is an arithmetic number, because the mean of its divisors is an integer number (3184581).

Almost surely, 2^12738318 is an apocalyptic number.

12738318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12738318 is a wasteful number, since it uses less digits than its factorization.

12738318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123058.

The product of its digits is 8064, while the sum is 33.

The square root of 12738318 is about 3569.0780322094. The cubic root of 12738318 is about 233.5450654077.

It can be divided in two parts, 1273 and 8318, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 12738318 in words is "twelve million, seven hundred thirty-eight thousand, three hundred eighteen".