287968 has 12 divisors (see below), whose sum is σ = 567000. Its totient is φ = 143968.

The previous prime is 287939. The next prime is 287977. The reversal of 287968 is 869782.

It is a self number, because there is not a number n which added to its sum of digits gives 287968.

It is a congruent number.

It is an unprimeable number.

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, 4468 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2²⁸⁷⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

287968 is a deficient number, since it is larger than the sum of its proper divisors (279032).

287968 is an equidigital number, since it uses as much as digits as its factorization.

287968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009 (or 9001 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 287968 is about 536.6264995320. The cubic root of 287968 is about 66.0360990153.

The spelling of 287968 in words is "two hundred eighty-seven thousand, nine hundred sixty-eight".