808218 has 24 divisors (see below), whose sum is σ = 1817088. Its totient is φ = 269244.

The previous prime is 808217. The next prime is 808229. The reversal of 808218 is 812808.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 808191 and 808200.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 808218.

It is not an unprimeable number, because it can be changed into a prime (808211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (75712).

2⁸⁰⁸²¹⁸ is an apocalyptic number.

808218 is an abundant number, since it is smaller than the sum of its proper divisors (1008870).

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

808218 is a wasteful number, since it uses less digits than its factorization.

808218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 808218 is about 899.0094549002. The cubic root of 808218 is about 93.1485658721.

It can be divided in two parts, 8082 and 18, that added together give a square (8100 = 90²).

The spelling of 808218 in words is "eight hundred eight thousand, two hundred eighteen".