286285 has 8 divisors (see below), whose sum is σ = 354816. Its totient is φ = 221520.

The previous prime is 286249. The next prime is 286289. The reversal of 286285 is 582682.

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

It is not a de Polignac number, because 286285 - 2⁹ = 285773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 2⁴ + 8² + 2¹¹ + 6⁷ + 8⁴ + 5³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286289) 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, 769 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2²⁸⁶²⁸⁵ is an apocalyptic number.

It is an amenable number.

286285 is a deficient number, since it is larger than the sum of its proper divisors (68531).

286285 is a wasteful number, since it uses less digits than its factorization.

286285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883.

The product of its digits is 7680, while the sum is 31.

The square root of 286285 is about 535.0560718280. The cubic root of 286285 is about 65.9072004646.

The spelling of 286285 in words is "two hundred eighty-six thousand, two hundred eighty-five".