280283 has 4 divisors (see below), whose sum is σ = 281688. Its totient is φ = 278880.

The previous prime is 280277. The next prime is 280297. The reversal of 280283 is 382082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280283 - 2⁶ = 280219 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280283.

It is not an unprimeable number, because it can be changed into a prime (280223) 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, 341 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (70422).

2²⁸⁰²⁸³ is an apocalyptic number.

280283 is a deficient number, since it is larger than the sum of its proper divisors (1405).

280283 is a wasteful number, since it uses less digits than its factorization.

280283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

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

The square root of 280283 is about 529.4176045430. The cubic root of 280283 is about 65.4433595386.

The spelling of 280283 in words is "two hundred eighty thousand, two hundred eighty-three".