280590 has 32 divisors (see below), whose sum is σ = 691200. Its totient is φ = 72864.

The previous prime is 280589. The next prime is 280591. The reversal of 280590 is 95082.

It is an interprime number because it is at equal distance from previous prime (280589) and next prime (280591).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 280590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2²⁸⁰⁵⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345600).

280590 is an abundant number, since it is smaller than the sum of its proper divisors (410610).

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

280590 is a wasteful number, since it uses less digits than its factorization.

280590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 280590 is about 529.7074664378. The cubic root of 280590 is about 65.4672446600.

The spelling of 280590 in words is "two hundred eighty thousand, five hundred ninety".