280707 has 8 divisors (see below), whose sum is σ = 427776. Its totient is φ = 160392.

The previous prime is 280703. The next prime is 280711. The reversal of 280707 is 707082.

It is an interprime number because it is at equal distance from previous prime (280703) and next prime (280711).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 280707 - 2² = 280703 is a prime.

280707 is a modest number, since divided by 707 gives 28 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280707.

It is not an unprimeable number, because it can be changed into a prime (280703) 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, 6663 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (53472).

2²⁸⁰⁷⁰⁷ is an apocalyptic number.

280707 is a deficient number, since it is larger than the sum of its proper divisors (147069).

280707 is a wasteful number, since it uses less digits than its factorization.

280707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13377.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 280707 is about 529.8178932426. The cubic root of 280707 is about 65.4763428736.

Adding to 280707 its reverse (707082), we get a palindrome (987789).

The spelling of 280707 in words is "two hundred eighty thousand, seven hundred seven".