280071 has 32 divisors (see below), whose sum is σ = 483840. Its totient is φ = 158400.

The previous prime is 280069. The next prime is 280097. The reversal of 280071 is 170082.

It is not a de Polignac number, because 280071 - 2¹ = 280069 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 280071.

It is not an unprimeable number, because it can be changed into a prime (280001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6811 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2²⁸⁰⁰⁷¹ is an apocalyptic number.

280071 is a deficient number, since it is larger than the sum of its proper divisors (203769).

280071 is a wasteful number, since it uses less digits than its factorization.

280071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 280071 is about 529.2173466545. The cubic root of 280071 is about 65.4268553962.

The spelling of 280071 in words is "two hundred eighty thousand, seventy-one".