118287 has 16 divisors (see below), whose sum is σ = 189280. Its totient is φ = 72576.

The previous prime is 118277. The next prime is 118297. The reversal of 118287 is 782811.

It is an interprime number because it is at equal distance from previous prime (118277) and next prime (118297).

It is not a de Polignac number, because 118287 - 2¹¹ = 116239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 118287.

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 118287.

It is not an unprimeable number, because it can be changed into a prime (118247) 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, 183 + ... + 519.

It is an arithmetic number, because the mean of its divisors is an integer number (11830).

2¹¹⁸²⁸⁷ is an apocalyptic number.

118287 is a deficient number, since it is larger than the sum of its proper divisors (70993).

118287 is a wasteful number, since it uses less digits than its factorization.

118287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 353 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 118287 is about 343.9287716955. The cubic root of 118287 is about 49.0884145758.

The spelling of 118287 in words is "one hundred eighteen thousand, two hundred eighty-seven".