287884 has 6 divisors (see below), whose sum is σ = 503804. Its totient is φ = 143940.

The previous prime is 287873. The next prime is 287887. The reversal of 287884 is 488782.

It is not an unprimeable number, because it can be changed into a prime (287887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35982 + ... + 35989.

2²⁸⁷⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

287884 is a deficient number, since it is larger than the sum of its proper divisors (215920).

287884 is a wasteful number, since it uses less digits than its factorization.

287884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71975 (or 71973 counting only the distinct ones).

The product of its digits is 28672, while the sum is 37.

The square root of 287884 is about 536.5482270961. The cubic root of 287884 is about 66.0296775011.

The spelling of 287884 in words is "two hundred eighty-seven thousand, eight hundred eighty-four".