12473218 has 16 divisors (see below), whose sum is σ = 19487160. Its totient is φ = 5982336.

The previous prime is 12473213. The next prime is 12473221. The reversal of 12473218 is 81237421.

12473218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12439729 + 33489 = 3527^2 + 183^2 .

It is not an unprimeable number, because it can be changed into a prime (12473213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4248 + ... + 6556.

Almost surely, 2^12473218 is an apocalyptic number.

12473218 is a deficient number, since it is larger than the sum of its proper divisors (7013942).

12473218 is a wasteful number, since it uses less digits than its factorization.

12473218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421.

The product of its digits is 2688, while the sum is 28.

The square root of 12473218 is about 3531.7443282322. The cubic root of 12473218 is about 231.9135751216.

It can be divided in two parts, 124732 and 18, that added together give a triangular number (124750 = T₄₉₉).

The spelling of 12473218 in words is "twelve million, four hundred seventy-three thousand, two hundred eighteen".