13028218 has 24 divisors (see below), whose sum is σ = 23353812. Its totient is φ = 5431104.

The previous prime is 13028207. The next prime is 13028233. The reversal of 13028218 is 81282031.

It can be written as a sum of positive squares in 2 ways, for example, as 12794929 + 233289 = 3577^2 + 483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13028192 and 13028201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1830 + ... + 5422.

Almost surely, 2^13028218 is an apocalyptic number.

13028218 is a deficient number, since it is larger than the sum of its proper divisors (10325594).

13028218 is a wasteful number, since it uses less digits than its factorization.

13028218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646 (or 3639 counting only the distinct ones).

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

The square root of 13028218 is about 3609.4622868233. The cubic root of 13028218 is about 235.3034739343.

The spelling of 13028218 in words is "thirteen million, twenty-eight thousand, two hundred eighteen".