287247 has 12 divisors (see below), whose sum is σ = 402584. Its totient is φ = 182160.

The previous prime is 287239. The next prime is 287251. The reversal of 287247 is 742782.

It is not a de Polignac number, because 287247 - 2³ = 287239 is a prime.

It is a Duffinian 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 287247.

It is not an unprimeable number, because it can be changed into a prime (287237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1497 + ... + 1677.

2²⁸⁷²⁴⁷ is an apocalyptic number.

287247 is a deficient number, since it is larger than the sum of its proper divisors (115337).

287247 is a wasteful number, since it uses less digits than its factorization.

287247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 207 counting only the distinct ones).

The product of its digits is 6272, while the sum is 30.

The square root of 287247 is about 535.9542890956. The cubic root of 287247 is about 65.9809403183.

Subtracting 287247 from its reverse (742782), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 287247 in words is "two hundred eighty-seven thousand, two hundred forty-seven".