287081085 has 16 divisors (see below), whose sum is σ = 463791744. Its totient is φ = 151622592.

The previous prime is 287080973. The next prime is 287081117. The reversal of 287081085 is 580180782.

It is not a de Polignac number, because 287081085 - 2¹⁰ = 287080061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91362 + ... + 94451.

It is an arithmetic number, because the mean of its divisors is an integer number (28986984).

Almost surely, 2^287081085 is an apocalyptic number.

It is an amenable number.

287081085 is a deficient number, since it is larger than the sum of its proper divisors (176710659).

287081085 is a wasteful number, since it uses less digits than its factorization.

287081085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185924.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 287081085 is about 16943.4673251965. The cubic root of 287081085 is about 659.6823425449.

The spelling of 287081085 in words is "two hundred eighty-seven million, eighty-one thousand, eighty-five".