287080 has 16 divisors (see below), whose sum is σ = 646020. Its totient is φ = 114816.

The previous prime is 287059. The next prime is 287087. The reversal of 287080 is 80782.

It can be written as a sum of positive squares in 2 ways, for example, as 276676 + 10404 = 526^2 + 102^2 .

It is not an unprimeable number, because it can be changed into a prime (287087) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3549 + ... + 3628.

2²⁸⁷⁰⁸⁰ is an apocalyptic number.

287080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287080 is an abundant number, since it is smaller than the sum of its proper divisors (358940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287080 is a wasteful number, since it uses less digits than its factorization.

287080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188 (or 7184 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 287080 is about 535.7984695760. The cubic root of 287080 is about 65.9681511472.

The spelling of 287080 in words is "two hundred eighty-seven thousand, eighty".