200818 has 16 divisors (see below), whose sum is σ = 322560. Its totient is φ = 93600.

The previous prime is 200807. The next prime is 200843. The reversal of 200818 is 818002.

It is a happy number.

200818 is nontrivially palindromic in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 200795 and 200804.

It is an unprimeable number.

200818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2503 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2²⁰⁰⁸¹⁸ is an apocalyptic number.

200818 is a deficient number, since it is larger than the sum of its proper divisors (121742).

200818 is a wasteful number, since it uses less digits than its factorization.

200818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 200818 is about 448.1272140810. The cubic root of 200818 is about 58.5599745314.

The spelling of 200818 in words is "two hundred thousand, eight hundred eighteen".