287971 has 8 divisors (see below), whose sum is σ = 304304. Its totient is φ = 272160.

The previous prime is 287939. The next prime is 287977. The reversal of 287971 is 179782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287971 - 2⁵ = 287939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 1681.

It is an arithmetic number, because the mean of its divisors is an integer number (38038).

2²⁸⁷⁹⁷¹ is an apocalyptic number.

287971 is a deficient number, since it is larger than the sum of its proper divisors (16333).

287971 is a wasteful number, since it uses less digits than its factorization.

287971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its digits is 7056, while the sum is 34.

The square root of 287971 is about 536.6292947650. The cubic root of 287971 is about 66.0363283320.

The spelling of 287971 in words is "two hundred eighty-seven thousand, nine hundred seventy-one".