280079275 has 24 divisors (see below), whose sum is σ = 397545984. Its totient is φ = 191748000.

The previous prime is 280079273. The next prime is 280079279. The reversal of 280079275 is 572970082.

It is not a de Polignac number, because 280079275 - 2¹ = 280079273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280079273) 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, 192300 + ... + 193750.

It is an arithmetic number, because the mean of its divisors is an integer number (16564416).

Almost surely, 2^280079275 is an apocalyptic number.

280079275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280079275 is a deficient number, since it is larger than the sum of its proper divisors (117466709).

280079275 is a wasteful number, since it uses less digits than its factorization.

280079275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571 (or 2566 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 280079275 is about 16735.5691567392. The cubic root of 280079275 is about 654.2749975884.

The spelling of 280079275 in words is "two hundred eighty million, seventy-nine thousand, two hundred seventy-five".