288687 has 16 divisors (see below), whose sum is σ = 449280. Its totient is φ = 161472.

The previous prime is 288683. The next prime is 288689. The reversal of 288687 is 786882.

It is not a de Polignac number, because 288687 - 2² = 288683 is a prime.

It is an Ulam number.

It is a plaindrome in base 16.

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 288687.

It is not an unprimeable number, because it can be changed into a prime (288683) 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, 1123 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2²⁸⁸⁶⁸⁷ is an apocalyptic number.

288687 is a deficient number, since it is larger than the sum of its proper divisors (160593).

288687 is a wasteful number, since it uses less digits than its factorization.

288687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302.

The product of its digits is 43008, while the sum is 39.

The square root of 288687 is about 537.2960078020. The cubic root of 288687 is about 66.0910130958.

The spelling of 288687 in words is "two hundred eighty-eight thousand, six hundred eighty-seven".