286385 has 16 divisors (see below), whose sum is σ = 387072. Its totient is φ = 201600.

The previous prime is 286381. The next prime is 286393. The reversal of 286385 is 583682.

It is not a de Polignac number, because 286385 - 2² = 286381 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286385.

It is not an unprimeable number, because it can be changed into a prime (286381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2192 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2²⁸⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

286385 is a deficient number, since it is larger than the sum of its proper divisors (100687).

286385 is a wasteful number, since it uses less digits than its factorization.

286385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184.

The product of its digits is 11520, while the sum is 32.

The square root of 286385 is about 535.1495118189. The cubic root of 286385 is about 65.9148734162.

The spelling of 286385 in words is "two hundred eighty-six thousand, three hundred eighty-five".