287996 has 6 divisors (see below), whose sum is σ = 504000. Its totient is φ = 143996.

The previous prime is 287977. The next prime is 288007. The reversal of 287996 is 699782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35996 + ... + 36003.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2²⁸⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

287996 is a deficient number, since it is larger than the sum of its proper divisors (216004).

287996 is a wasteful number, since it uses less digits than its factorization.

287996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72003 (or 72001 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 287996 is about 536.6525878070. The cubic root of 287996 is about 66.0382392425.

The spelling of 287996 in words is "two hundred eighty-seven thousand, nine hundred ninety-six".