280275 has 24 divisors (see below), whose sum is σ = 480624. Its totient is φ = 144000.

The previous prime is 280253. The next prime is 280277. The reversal of 280275 is 572082.

It is not a de Polignac number, because 280275 - 2⁵ = 280243 is a prime.

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 280275.

It is not an unprimeable number, because it can be changed into a prime (280277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2725 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (20026).

2²⁸⁰²⁷⁵ is an apocalyptic number.

280275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280275 is a deficient number, since it is larger than the sum of its proper divisors (200349).

280275 is a wasteful number, since it uses less digits than its factorization.

280275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 280275 is about 529.4100490168. The cubic root of 280275 is about 65.4427368919.

It can be divided in two parts, 280 and 275, that added together give a palindrome (555).

The spelling of 280275 in words is "two hundred eighty thousand, two hundred seventy-five".