208218 has 8 divisors (see below), whose sum is σ = 416448. Its totient is φ = 69404.

The previous prime is 208217. The next prime is 208223. The reversal of 208218 is 812802.

It is a sphenic number, since it is the product of 3 distinct primes.

208218 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 208194 and 208203.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 208218.

It is not an unprimeable number, because it can be changed into a prime (208213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17346 + ... + 17357.

It is an arithmetic number, because the mean of its divisors is an integer number (52056).

2²⁰⁸²¹⁸ is an apocalyptic number.

208218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208218 is a wasteful number, since it uses less digits than its factorization.

208218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34708.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 208218 is about 456.3091057606. The cubic root of 208218 is about 59.2706136326.

The spelling of 208218 in words is "two hundred eight thousand, two hundred eighteen".