287862 has 8 divisors (see below), whose sum is σ = 575736. Its totient is φ = 95952.

The previous prime is 287857. The next prime is 287863. The reversal of 287862 is 268782.

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

287862 is an admirable 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 287862.

It is not an unprimeable number, because it can be changed into a prime (287863) by changing a digit.

287862 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, 23983 + ... + 23994.

It is an arithmetic number, because the mean of its divisors is an integer number (71967).

2²⁸⁷⁸⁶² is an apocalyptic number.

287862 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.

287862 is a wasteful number, since it uses less digits than its factorization.

287862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47982.

The product of its digits is 10752, while the sum is 33.

The square root of 287862 is about 536.5277252855. The cubic root of 287862 is about 66.0279954696.

The spelling of 287862 in words is "two hundred eighty-seven thousand, eight hundred sixty-two".