283280 has 20 divisors (see below), whose sum is σ = 658812. Its totient is φ = 113280.

The previous prime is 283277. The next prime is 283289. The reversal of 283280 is 82382.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 173056 = 332^2 + 416^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283280.

It is not an unprimeable number, because it can be changed into a prime (283289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 1850.

2²⁸³²⁸⁰ is an apocalyptic number.

283280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283280 is an abundant number, since it is smaller than the sum of its proper divisors (375532).

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

283280 is a wasteful number, since it uses less digits than its factorization.

283280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 283280 is about 532.2405471213. The cubic root of 283280 is about 65.6757898576.

The spelling of 283280 in words is "two hundred eighty-three thousand, two hundred eighty".