280814 has 4 divisors (see below), whose sum is σ = 421224. Its totient is φ = 140406.

The previous prime is 280811. The next prime is 280817. The reversal of 280814 is 418082.

Added to its reverse (418082) it gives a square (698896 = 836²).

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (280811) and next prime (280817).

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 280814.

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 280814.

It is not an unprimeable number, because it can be changed into a prime (280811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70202 + ... + 70205.

It is an arithmetic number, because the mean of its divisors is an integer number (105306).

2²⁸⁰⁸¹⁴ is an apocalyptic number.

280814 is a deficient number, since it is larger than the sum of its proper divisors (140410).

280814 is a wasteful number, since it uses less digits than its factorization.

280814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140409.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 280814 is about 529.9188617138. The cubic root of 280814 is about 65.4846612491.

Adding to 280814 its reverse (418082), we get a palindrome (698896).

The spelling of 280814 in words is "two hundred eighty thousand, eight hundred fourteen".