809320 has 16 divisors (see below), whose sum is σ = 1821060. Its totient is φ = 323712.

The previous prime is 809309. The next prime is 809323. The reversal of 809320 is 23908.

It can be written as a sum of positive squares in 2 ways, for example, as 806404 + 2916 = 898^2 + 54^2 .

It is a junction number, because it is equal to n+sod(n) for n = 809291 and 809300.

It is not an unprimeable number, because it can be changed into a prime (809323) by changing a digit.

809320 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 3 ways as a sum of consecutive naturals, for example, 10077 + ... + 10156.

2⁸⁰⁹³²⁰ is an apocalyptic number.

It is an amenable number.

809320 is an abundant number, since it is smaller than the sum of its proper divisors (1011740).

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

809320 is a wasteful number, since it uses less digits than its factorization.

809320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244 (or 20240 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 809320 is about 899.6221429022. The cubic root of 809320 is about 93.1908824669.

The spelling of 809320 in words is "eight hundred nine thousand, three hundred twenty".