280088 has 16 divisors (see below), whose sum is σ = 530880. Its totient is φ = 138528.

The previous prime is 280069. The next prime is 280097. The reversal of 280088 is 880082.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

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 280088.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2²⁸⁰⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

280088 is a deficient number, since it is larger than the sum of its proper divisors (250792).

280088 is a wasteful number, since it uses less digits than its factorization.

280088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 280088 is about 529.2334078646. The cubic root of 280088 is about 65.4281791486.

The spelling of 280088 in words is "two hundred eighty thousand, eighty-eight".