287382 has 16 divisors (see below), whose sum is σ = 580032. Its totient is φ = 94920.

The previous prime is 287347. The next prime is 287383. The reversal of 287382 is 283782.

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 287382.

It is not an unprimeable number, because it can be changed into a prime (287383) by changing a digit.

287382 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 7 ways as a sum of consecutive naturals, for example, 1153 + ... + 1379.

It is an arithmetic number, because the mean of its divisors is an integer number (36252).

2²⁸⁷³⁸² is an apocalyptic number.

287382 is an abundant number, since it is smaller than the sum of its proper divisors (292650).

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

287382 is a wasteful number, since it uses less digits than its factorization.

287382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its digits is 5376, while the sum is 30.

The square root of 287382 is about 536.0802178779. The cubic root of 287382 is about 65.9912752471.

Subtracting from 287382 its reverse (283782), we obtain a square (3600 = 60²).

The spelling of 287382 in words is "two hundred eighty-seven thousand, three hundred eighty-two".