280797 has 16 divisors (see below), whose sum is σ = 417792. Its totient is φ = 166320.

The previous prime is 280771. The next prime is 280811. The reversal of 280797 is 797082.

It is not a de Polignac number, because 280797 - 2⁸ = 280541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a plaindrome in base 16.

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 280797.

It is not an unprimeable number, because it can be changed into a prime (280717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2148 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (26112).

2²⁸⁰⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

280797 is a deficient number, since it is larger than the sum of its proper divisors (136995).

280797 is a wasteful number, since it uses less digits than its factorization.

280797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 280797 is about 529.9028212795. The cubic root of 280797 is about 65.4833397792.

The spelling of 280797 in words is "two hundred eighty thousand, seven hundred ninety-seven".