287042686 has 12 divisors (see below), whose sum is σ = 500860368. Its totient is φ = 123018252.

The previous prime is 287042669. The next prime is 287042699. The reversal of 287042686 is 686240782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1464406 + ... + 1464601.

It is an arithmetic number, because the mean of its divisors is an integer number (41738364).

Almost surely, 2^287042686 is an apocalyptic number.

287042686 is a deficient number, since it is larger than the sum of its proper divisors (213817682).

287042686 is a wasteful number, since it uses less digits than its factorization.

287042686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929023 (or 2929016 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 287042686 is about 16942.3341367121. The cubic root of 287042686 is about 659.6529289366.

The spelling of 287042686 in words is "two hundred eighty-seven million, forty-two thousand, six hundred eighty-six".