280500275 has 12 divisors (see below), whose sum is σ = 379440744. Its totient is φ = 204000000.

The previous prime is 280500263. The next prime is 280500301. The reversal of 280500275 is 572005082.

It is not a de Polignac number, because 280500275 - 2¹² = 280496179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 509726 + ... + 510275.

It is an arithmetic number, because the mean of its divisors is an integer number (31620062).

Almost surely, 2^280500275 is an apocalyptic number.

280500275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280500275 is a deficient number, since it is larger than the sum of its proper divisors (98940469).

280500275 is a wasteful number, since it uses less digits than its factorization.

280500275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020022 (or 1020017 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 280500275 is about 16748.1424343119. The cubic root of 280500275 is about 654.6026570524.

The spelling of 280500275 in words is "two hundred eighty million, five hundred thousand, two hundred seventy-five".