286887 has 4 divisors (see below), whose sum is σ = 382520. Its totient is φ = 191256.

The previous prime is 286873. The next prime is 286927. The reversal of 286887 is 788682.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 286887 - 2¹¹ = 284839 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 8² + 8² + 6⁵ + 8⁶ + 7⁵ .

It is a D-number.

It is a Duffinian number.

286887 is a lucky 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 286887.

It is not an unprimeable number, because it can be changed into a prime (286487) 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, 47812 + ... + 47817.

It is an arithmetic number, because the mean of its divisors is an integer number (95630).

2²⁸⁶⁸⁸⁷ is an apocalyptic number.

286887 is a deficient number, since it is larger than the sum of its proper divisors (95633).

286887 is an equidigital number, since it uses as much as digits as its factorization.

286887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95632.

The product of its digits is 43008, while the sum is 39.

The square root of 286887 is about 535.6183342642. The cubic root of 286887 is about 65.9533646679.

The spelling of 286887 in words is "two hundred eighty-six thousand, eight hundred eighty-seven".