280844 has 12 divisors (see below), whose sum is σ = 499968. Its totient is φ = 138000.

The previous prime is 280843. The next prime is 280859. The reversal of 280844 is 448082.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280844.

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 3 ways as a sum of consecutive naturals, for example, 332 + ... + 819.

It is an arithmetic number, because the mean of its divisors is an integer number (41664).

2²⁸⁰⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

280844 is a deficient number, since it is larger than the sum of its proper divisors (219124).

280844 is a wasteful number, since it uses less digits than its factorization.

280844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 280844 is about 529.9471671780. The cubic root of 280844 is about 65.4869931246.

The spelling of 280844 in words is "two hundred eighty thousand, eight hundred forty-four".