280359 has 6 divisors (see below), whose sum is σ = 404976. Its totient is φ = 186900.

The previous prime is 280351. The next prime is 280373. The reversal of 280359 is 953082.

It is not a de Polignac number, because 280359 - 2³ = 280351 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 280359.

It is not an unprimeable number, because it can be changed into a prime (280351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15567 + ... + 15584.

It is an arithmetic number, because the mean of its divisors is an integer number (67496).

2²⁸⁰³⁵⁹ is an apocalyptic number.

280359 is a deficient number, since it is larger than the sum of its proper divisors (124617).

280359 is a wasteful number, since it uses less digits than its factorization.

280359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31157 (or 31154 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 280359 is about 529.4893766640. The cubic root of 280359 is about 65.4492740915.

The spelling of 280359 in words is "two hundred eighty thousand, three hundred fifty-nine".