287860868 has 12 divisors (see below), whose sum is σ = 530270160. Its totient is φ = 136355112.

The previous prime is 287860829. The next prime is 287860871. The reversal of 287860868 is 868068782.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893746 + ... + 1893897.

It is an arithmetic number, because the mean of its divisors is an integer number (44189180).

Almost surely, 2^287860868 is an apocalyptic number.

It is an amenable number.

287860868 is a deficient number, since it is larger than the sum of its proper divisors (242409292).

287860868 is a wasteful number, since it uses less digits than its factorization.

287860868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787666 (or 3787664 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The square root of 287860868 is about 16966.4630374159. The cubic root of 287860868 is about 660.2790891908.

The spelling of 287860868 in words is "two hundred eighty-seven million, eight hundred sixty thousand, eight hundred sixty-eight".