280808873 has 12 divisors (see below), whose sum is σ = 306372492. Its totient is φ = 257137920.

The previous prime is 280808867. The next prime is 280808903. The reversal of 280808873 is 378808082.

It can be written as a sum of positive squares in 6 ways, for example, as 7997584 + 272811289 = 2828^2 + 16517^2 .

It is not a de Polignac number, because 280808873 - 2¹⁴ = 280792489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280808833) 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, 2438 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (25531041).

Almost surely, 2^280808873 is an apocalyptic number.

It is an amenable number.

280808873 is a deficient number, since it is larger than the sum of its proper divisors (25563619).

280808873 is a wasteful number, since it uses less digits than its factorization.

280808873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26332 (or 26315 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 280808873 is about 16757.3528040678. The cubic root of 280808873 is about 654.8426271494.

The spelling of 280808873 in words is "two hundred eighty million, eight hundred eight thousand, eight hundred seventy-three".