• 287 can be written using four 4's:
287 is nontrivially palindromic in base 13.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Kynea number, being equal to (24 + 1)2 - 2.
287 is an undulating number in base 13.
It is a plaindrome in base 6, base 9, base 12, base 14 and base 16.
It is a zygodrome in base 6.
It is a congruent number.
2287 is an apocalyptic number.
287 is the 14-th pentagonal number.
287 is an equidigital number, since it uses as much as digits as its factorization.
287 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48.
The square root of 287 is about 16.9410743461. The cubic root of 287 is about 6.5962022841.
The spelling of 287 in words is "two hundred eighty-seven", and thus it is an aban number.