280791 has 12 divisors (see below), whose sum is σ = 463632. Its totient is φ = 160416.

The previous prime is 280771. The next prime is 280811. The reversal of 280791 is 197082.

It is an interprime number because it is at equal distance from previous prime (280771) and next prime (280811).

It is not a de Polignac number, because 280791 - 2⁵ = 280759 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280791.

It is not an unprimeable number, because it can be changed into a prime (280711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2166 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (38636).

2²⁸⁰⁷⁹¹ is an apocalyptic number.

280791 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

280791 is a deficient number, since it is larger than the sum of its proper divisors (182841).

280791 is a wasteful number, since it uses less digits than its factorization.

280791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 280791 is about 529.8971598339. The cubic root of 280791 is about 65.4828733654.

The spelling of 280791 in words is "two hundred eighty thousand, seven hundred ninety-one".