12284218 has 4 divisors (see below), whose sum is σ = 18426330. Its totient is φ = 6142108.

The previous prime is 12284201. The next prime is 12284219. The reversal of 12284218 is 81248221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 5139289 = 2673^2 + 2267^2 .

It is not an unprimeable number, because it can be changed into a prime (12284219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071053 + ... + 3071056.

Almost surely, 2^12284218 is an apocalyptic number.

12284218 is a deficient number, since it is larger than the sum of its proper divisors (6142112).

12284218 is an equidigital number, since it uses as much as digits as its factorization.

12284218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142111.

The product of its digits is 2048, while the sum is 28.

The square root of 12284218 is about 3504.8848768540. The cubic root of 12284218 is about 230.7362543934.

The spelling of 12284218 in words is "twelve million, two hundred eighty-four thousand, two hundred eighteen".