287283 has 16 divisors (see below), whose sum is σ = 418176. Its totient is φ = 174720.

The previous prime is 287281. The next prime is 287291. The reversal of 287283 is 382782.

It is not a de Polignac number, because 287283 - 2¹ = 287281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287283.

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 287283.

It is not an unprimeable number, because it can be changed into a prime (287281) 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, 2128 + ... + 2258.

It is an arithmetic number, because the mean of its divisors is an integer number (26136).

2²⁸⁷²⁸³ is an apocalyptic number.

287283 is a deficient number, since it is larger than the sum of its proper divisors (130893).

287283 is a wasteful number, since it uses less digits than its factorization.

287283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194.

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

The square root of 287283 is about 535.9878729971. The cubic root of 287283 is about 65.9836966158.

The spelling of 287283 in words is "two hundred eighty-seven thousand, two hundred eighty-three".