286842 has 8 divisors (see below), whose sum is σ = 573696. Its totient is φ = 95612.

The previous prime is 286831. The next prime is 286859. The reversal of 286842 is 248682.

It is a happy number.

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

286842 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286842.

It is an unprimeable number.

286842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23898 + ... + 23909.

It is an arithmetic number, because the mean of its divisors is an integer number (71712).

2²⁸⁶⁸⁴² is an apocalyptic number.

286842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

286842 is a wasteful number, since it uses less digits than its factorization.

286842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47812.

The product of its digits is 6144, while the sum is 30.

The square root of 286842 is about 535.5763250929. The cubic root of 286842 is about 65.9499160899.

It can be divided in two parts, 286 and 842, that added together give a triangular number (1128 = T₄₇).

The spelling of 286842 in words is "two hundred eighty-six thousand, eight hundred forty-two".