287995 has 8 divisors (see below), whose sum is σ = 348480. Its totient is φ = 228480.

The previous prime is 287977. The next prime is 288007. The reversal of 287995 is 599782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287995 - 2⁷ = 287867 is a prime.

It is a super-2 number, since 2×287995² = 165882240050, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075 + ... + 1315.

It is an arithmetic number, because the mean of its divisors is an integer number (43560).

2²⁸⁷⁹⁹⁵ is an apocalyptic number.

287995 is a deficient number, since it is larger than the sum of its proper divisors (60485).

287995 is a wasteful number, since it uses less digits than its factorization.

287995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its digits is 45360, while the sum is 40.

The square root of 287995 is about 536.6516561048. The cubic root of 287995 is about 66.0381628082.

The spelling of 287995 in words is "two hundred eighty-seven thousand, nine hundred ninety-five".