218002 has 4 divisors (see below), whose sum is σ = 327006. Its totient is φ = 109000.

The previous prime is 217981. The next prime is 218003. The reversal of 218002 is 200812.

218002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 192721 + 25281 = 439^2 + 159^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (218003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54499 + ... + 54502.

2²¹⁸⁰⁰² is an apocalyptic number.

218002 is a deficient number, since it is larger than the sum of its proper divisors (109004).

218002 is a wasteful number, since it uses less digits than its factorization.

218002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109003.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 218002 is about 466.9068429569. The cubic root of 218002 is about 60.1848005983.

Adding to 218002 its reverse (200812), we get a palindrome (418814).

The spelling of 218002 in words is "two hundred eighteen thousand, two".