280316 has 6 divisors (see below), whose sum is σ = 490560. Its totient is φ = 140156.

The previous prime is 280303. The next prime is 280321. The reversal of 280316 is 613082.

280316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁷ + 8 + 3⁵ + 0 + 1 + 6⁷ .

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 280316.

It is an unprimeable number.

280316 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 as a sum of consecutive naturals, namely, 35036 + ... + 35043.

It is an arithmetic number, because the mean of its divisors is an integer number (81760).

2²⁸⁰³¹⁶ is an apocalyptic number.

It is an amenable number.

280316 is a deficient number, since it is larger than the sum of its proper divisors (210244).

280316 is a wasteful number, since it uses less digits than its factorization.

280316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70083 (or 70081 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 280316 is about 529.4487699485. The cubic root of 280316 is about 65.4459278311.

Adding to 280316 its reverse (613082), we get a palindrome (893398).

The spelling of 280316 in words is "two hundred eighty thousand, three hundred sixteen".