280488 has 64 divisors (see below), whose sum is σ = 806400. Its totient is φ = 80640.

The previous prime is 280487. The next prime is 280499. The reversal of 280488 is 884082.

280488 is nontrivially palindromic in base 5.

280488 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (280487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9033 + ... + 9063.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2²⁸⁰⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403200).

280488 is an abundant number, since it is smaller than the sum of its proper divisors (525912).

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

280488 is a wasteful number, since it uses less digits than its factorization.

280488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 280488 is about 529.6111781298. The cubic root of 280488 is about 65.4593108203.

The spelling of 280488 in words is "two hundred eighty thousand, four hundred eighty-eight".