804308 has 18 divisors (see below), whose sum is σ = 1488186. Its totient is φ = 380304.

The previous prime is 804283. The next prime is 804313. The reversal of 804308 is 803408.

It can be written as a sum of positive squares in only one way, i.e., 521284 + 283024 = 722^2 + 532^2 .

It is a super-2 number, since 2×804308² = 1293822717728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

804308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1166 + ... + 1722.

It is an arithmetic number, because the mean of its divisors is an integer number (82677).

2⁸⁰⁴³⁰⁸ is an apocalyptic number.

It is an amenable number.

804308 is a deficient number, since it is larger than the sum of its proper divisors (683878).

804308 is a wasteful number, since it uses less digits than its factorization.

804308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 804308 is about 896.8322028117. The cubic root of 804308 is about 92.9981114967.

Subtracting from 804308 its reverse (803408), we obtain a square (900 = 30²).

The spelling of 804308 in words is "eight hundred four thousand, three hundred eight".