804218 has 8 divisors (see below), whose sum is σ = 1258848. Its totient is φ = 384604.

The previous prime is 804211. The next prime is 804239. The reversal of 804218 is 812408.

804218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 804193 and 804202.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 804218.

It is not an unprimeable number, because it can be changed into a prime (804211) 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, 8696 + ... + 8787.

It is an arithmetic number, because the mean of its divisors is an integer number (157356).

2⁸⁰⁴²¹⁸ is an apocalyptic number.

804218 is a deficient number, since it is larger than the sum of its proper divisors (454630).

804218 is a wasteful number, since it uses less digits than its factorization.

804218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17508.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 804218 is about 896.7820247976. The cubic root of 804218 is about 92.9946426174.

The spelling of 804218 in words is "eight hundred four thousand, two hundred eighteen".