280608 has 48 divisors (see below), whose sum is σ = 766080. Its totient is φ = 89856.

The previous prime is 280607. The next prime is 280613. The reversal of 280608 is 806082.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280608.

It is not an unprimeable number, because it can be changed into a prime (280603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3513 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2²⁸⁰⁶⁰⁸ 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 280608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383040).

280608 is an abundant number, since it is smaller than the sum of its proper divisors (485472).

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

280608 is a wasteful number, since it uses less digits than its factorization.

280608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 280608 is about 529.7244566754. The cubic root of 280608 is about 65.4686445498.

It can be divided in two parts, 280 and 608, that added together give a palindrome (888).

The spelling of 280608 in words is "two hundred eighty thousand, six hundred eight".