280580 has 12 divisors (see below), whose sum is σ = 589260. Its totient is φ = 112224.

The previous prime is 280561. The next prime is 280583. The reversal of 280580 is 85082.

It can be written as a sum of positive squares in 2 ways, for example, as 42436 + 238144 = 206^2 + 488^2 .

It is a super-3 number, since 3×280580³ = 66266096313336000, which contains 333 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (280583) by changing a digit.

280580 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6995 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (49105).

2²⁸⁰⁵⁸⁰ is an apocalyptic number.

280580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280580 is an abundant number, since it is smaller than the sum of its proper divisors (308680).

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

280580 is a wasteful number, since it uses less digits than its factorization.

280580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14038 (or 14036 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 280580 is about 529.6980271815. The cubic root of 280580 is about 65.4664669176.

The spelling of 280580 in words is "two hundred eighty thousand, five hundred eighty".