282805 has 8 divisors (see below), whose sum is σ = 342432. Its totient is φ = 224208.

The previous prime is 282797. The next prime is 282809. The reversal of 282805 is 508282.

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

It is a cyclic number.

It is not a de Polignac number, because 282805 - 2³ = 282797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 282805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 988.

It is an arithmetic number, because the mean of its divisors is an integer number (42804).

2²⁸²⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

282805 is a deficient number, since it is larger than the sum of its proper divisors (59627).

282805 is a wasteful number, since it uses less digits than its factorization.

282805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515.

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

The square root of 282805 is about 531.7941331004. The cubic root of 282805 is about 65.6390612349.

The spelling of 282805 in words is "two hundred eighty-two thousand, eight hundred five".