280841 has 8 divisors (see below), whose sum is σ = 310368. Its totient is φ = 254100.

The previous prime is 280837. The next prime is 280843. The reversal of 280841 is 148082.

It is not a de Polignac number, because 280841 - 2² = 280837 is a prime.

It is an Ulam number.

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 280841.

It is not an unprimeable number, because it can be changed into a prime (280843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (38796).

2²⁸⁰⁸⁴¹ is an apocalyptic number.

It is an amenable number.

280841 is a deficient number, since it is larger than the sum of its proper divisors (29527).

280841 is an equidigital number, since it uses as much as digits as its factorization.

280841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 280841 is about 529.9443366996. The cubic root of 280841 is about 65.4867599445.

The spelling of 280841 in words is "two hundred eighty thousand, eight hundred forty-one".