804168 has 80 divisors (see below), whose sum is σ = 2417580. Its totient is φ = 248832.

The previous prime is 804161. The next prime is 804179. The reversal of 804168 is 861408.

It can be written as a sum of positive squares in 2 ways, for example, as 777924 + 26244 = 882^2 + 162^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (804161) by changing a digit.

804168 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 19 ways as a sum of consecutive naturals, for example, 10980 + ... + 11052.

2⁸⁰⁴¹⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208790).

804168 is an abundant number, since it is smaller than the sum of its proper divisors (1613412).

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

804168 is a wasteful number, since it uses less digits than its factorization.

804168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 804168 is about 896.7541469098. The cubic root of 804168 is about 92.9927153503.

The spelling of 804168 in words is "eight hundred four thousand, one hundred sixty-eight".