320285 has 8 divisors (see below), whose sum is σ = 439296. Its totient is φ = 219600.

The previous prime is 320273. The next prime is 320291. The reversal of 320285 is 582023.

320285 = T₂₉₉ + T₃₀₀ + ... + T₃₀₅.

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

It is not a de Polignac number, because 320285 - 2⁴ = 320269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320285.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4541 + ... + 4610.

It is an arithmetic number, because the mean of its divisors is an integer number (54912).

2³²⁰²⁸⁵ is an apocalyptic number.

320285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320285 is a deficient number, since it is larger than the sum of its proper divisors (119011).

320285 is an equidigital number, since it uses as much as digits as its factorization.

320285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 320285 is about 565.9372756764. The cubic root of 320285 is about 68.4193378061.

The spelling of 320285 in words is "three hundred twenty thousand, two hundred eighty-five".