280716 has 24 divisors (see below), whose sum is σ = 663600. Its totient is φ = 92352.

The previous prime is 280711. The next prime is 280717. The reversal of 280716 is 617082.

280716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280716.

It is not an unprimeable number, because it can be changed into a prime (280711) by changing a digit.

280716 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710 + ... + 1866.

It is an arithmetic number, because the mean of its divisors is an integer number (27650).

2²⁸⁰⁷¹⁶ is an apocalyptic number.

It is an amenable number.

280716 is an abundant number, since it is smaller than the sum of its proper divisors (382884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280716 is a wasteful number, since it uses less digits than its factorization.

280716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 280716 is about 529.8263866589. The cubic root of 280716 is about 65.4770426314.

Adding to 280716 its reverse (617082), we get a palindrome (897798).

The spelling of 280716 in words is "two hundred eighty thousand, seven hundred sixteen".