280880239 has 8 divisors (see below), whose sum is σ = 297622080. Its totient is φ = 264162816.

The previous prime is 280880213. The next prime is 280880261. The reversal of 280880239 is 932088082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280880239 - 2⁷ = 280880111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280880269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21082 + ... + 31720.

It is an arithmetic number, because the mean of its divisors is an integer number (37202760).

Almost surely, 2^280880239 is an apocalyptic number.

280880239 is a deficient number, since it is larger than the sum of its proper divisors (16741841).

280880239 is a wasteful number, since it uses less digits than its factorization.

280880239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12209.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 280880239 is about 16759.4820624028. The cubic root of 280880239 is about 654.8980973107.

The spelling of 280880239 in words is "two hundred eighty million, eight hundred eighty thousand, two hundred thirty-nine".