12418215 has 16 divisors (see below), whose sum is σ = 19914336. Its totient is φ = 6608000.

The previous prime is 12418213. The next prime is 12418277. The reversal of 12418215 is 51281421.

It is not a de Polignac number, because 12418215 - 2¹ = 12418213 is a prime.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 9925 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (1244646).

Almost surely, 2^12418215 is an apocalyptic number.

12418215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12418215 is a deficient number, since it is larger than the sum of its proper divisors (7496121).

12418215 is a wasteful number, since it uses less digits than its factorization.

12418215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its digits is 640, while the sum is 24.

The square root of 12418215 is about 3523.9487794234. The cubic root of 12418215 is about 231.5721839813.

Adding to 12418215 its reverse (51281421), we get a palindrome (63699636).

The spelling of 12418215 in words is "twelve million, four hundred eighteen thousand, two hundred fifteen".