218108 has 12 divisors (see below), whose sum is σ = 416472. Its totient is φ = 99120.

The previous prime is 218107. The next prime is 218111. The reversal of 218108 is 801812.

It is a self number, because there is not a number n which added to its sum of digits gives 218108.

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 218108.

It is not an unprimeable number, because it can be changed into a prime (218107) 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, 2435 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (34706).

2²¹⁸¹⁰⁸ is an apocalyptic number.

It is an amenable number.

218108 is a deficient number, since it is larger than the sum of its proper divisors (198364).

218108 is a wasteful number, since it uses less digits than its factorization.

218108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972 (or 4970 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 218108 is about 467.0203421694. The cubic root of 218108 is about 60.1945536513.

The spelling of 218108 in words is "two hundred eighteen thousand, one hundred eight".