280840675 has 6 divisors (see below), whose sum is σ = 348242468. Its totient is φ = 224672520.

The previous prime is 280840627. The next prime is 280840699. The reversal of 280840675 is 576048082.

It is not a de Polignac number, because 280840675 - 2¹⁵ = 280807907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5616789 + ... + 5616838.

Almost surely, 2^280840675 is an apocalyptic number.

280840675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280840675 is a deficient number, since it is larger than the sum of its proper divisors (67401793).

280840675 is a wasteful number, since it uses less digits than its factorization.

280840675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233637 (or 11233632 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 280840675 is about 16758.3016740957. The cubic root of 280840675 is about 654.8673468325.

The spelling of 280840675 in words is "two hundred eighty million, eight hundred forty thousand, six hundred seventy-five".