280048 has 20 divisors (see below), whose sum is σ = 566928. Its totient is φ = 133760.

The previous prime is 280037. The next prime is 280061. The reversal of 280048 is 840082.

It is a congruent number.

It is an unprimeable number.

280048 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 748.

2²⁸⁰⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

280048 is an abundant number, since it is smaller than the sum of its proper divisors (286880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280048 is a wasteful number, since it uses less digits than its factorization.

280048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 280048 is about 529.1956160060. The cubic root of 280048 is about 65.4250643517.

The spelling of 280048 in words is "two hundred eighty thousand, forty-eight".