280713 has 8 divisors (see below), whose sum is σ = 377568. Its totient is φ = 185504.

The previous prime is 280711. The next prime is 280717. The reversal of 280713 is 317082.

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 280713 - 2¹ = 280711 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 280713.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280713.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70 + ... + 752.

It is an arithmetic number, because the mean of its divisors is an integer number (47196).

2²⁸⁰⁷¹³ is an apocalyptic number.

It is an amenable number.

280713 is a deficient number, since it is larger than the sum of its proper divisors (96855).

280713 is a wasteful number, since it uses less digits than its factorization.

280713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 280713 is about 529.8235555352. The cubic root of 280713 is about 65.4768093805.

Adding to 280713 its reverse (317082), we get a palindrome (597795).

The spelling of 280713 in words is "two hundred eighty thousand, seven hundred thirteen".