13008218 has 4 divisors (see below), whose sum is σ = 19512330. Its totient is φ = 6504108.

The previous prime is 13008209. The next prime is 13008223. The reversal of 13008218 is 81280031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81280031 = 7 ⋅11611433.

It can be written as a sum of positive squares in only one way, i.e., 7166329 + 5841889 = 2677^2 + 2417^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13008193 and 13008202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252053 + ... + 3252056.

Almost surely, 2^13008218 is an apocalyptic number.

13008218 is a deficient number, since it is larger than the sum of its proper divisors (6504112).

13008218 is an equidigital number, since it uses as much as digits as its factorization.

13008218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504111.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 13008218 is about 3606.6907269684. The cubic root of 13008218 is about 235.1830051775.

Adding to 13008218 its reverse (81280031), we get a palindrome (94288249).

The spelling of 13008218 in words is "thirteen million, eight thousand, two hundred eighteen".