12418216 has 8 divisors (see below), whose sum is σ = 23284170. Its totient is φ = 6209104.

The previous prime is 12418213. The next prime is 12418277. The reversal of 12418216 is 61281421.

It can be written as a sum of positive squares in only one way, i.e., 10304100 + 2114116 = 3210^2 + 1454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12418213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776131 + ... + 776146.

Almost surely, 2^12418216 is an apocalyptic number.

It is an amenable number.

12418216 is a deficient number, since it is larger than the sum of its proper divisors (10865954).

12418216 is a wasteful number, since it uses less digits than its factorization.

12418216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552283 (or 1552279 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 12418216 is about 3523.9489213097. The cubic root of 12418216 is about 231.5721901972.

Adding to 12418216 its reverse (61281421), we get a palindrome (73699637).

The spelling of 12418216 in words is "twelve million, four hundred eighteen thousand, two hundred sixteen".