280798 has 16 divisors (see below), whose sum is σ = 497664. Its totient is φ = 116280.

The previous prime is 280771. The next prime is 280811. The reversal of 280798 is 897082.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 757.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2²⁸⁰⁷⁹⁸ is an apocalyptic number.

280798 is a deficient number, since it is larger than the sum of its proper divisors (216866).

280798 is a wasteful number, since it uses less digits than its factorization.

280798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 280798 is about 529.9037648479. The cubic root of 280798 is about 65.4834175142.

It can be divided in two parts, 2 and 80798, that multiplied together give a triangular number (161596 = T₅₆₈).

The spelling of 280798 in words is "two hundred eighty thousand, seven hundred ninety-eight".