282085 has 4 divisors (see below), whose sum is σ = 338508. Its totient is φ = 225664.

The previous prime is 282071. The next prime is 282089. The reversal of 282085 is 580282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580282 = 2 ⋅290141.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 145924 = 369^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 282085 - 2⁵ = 282053 is a prime.

It is a Duffinian number.

282085 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282089) 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, 28204 + ... + 28213.

It is an arithmetic number, because the mean of its divisors is an integer number (84627).

2²⁸²⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

282085 is a deficient number, since it is larger than the sum of its proper divisors (56423).

282085 is an equidigital number, since it uses as much as digits as its factorization.

282085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56422.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 282085 is about 531.1167479943. The cubic root of 282085 is about 65.5833098776.

The spelling of 282085 in words is "two hundred eighty-two thousand, eighty-five".