280086 has 8 divisors (see below), whose sum is σ = 560184. Its totient is φ = 93360.

The previous prime is 280069. The next prime is 280097. The reversal of 280086 is 680082.

280086 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

280086 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 23335 + ... + 23346.

It is an arithmetic number, because the mean of its divisors is an integer number (70023).

2²⁸⁰⁰⁸⁶ is an apocalyptic number.

280086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

280086 is a wasteful number, since it uses less digits than its factorization.

280086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46686.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 280086 is about 529.2315183358. The cubic root of 280086 is about 65.4280234158.

The spelling of 280086 in words is "two hundred eighty thousand, eighty-six".