259808 has 24 divisors (see below), whose sum is σ = 535248. Its totient is φ = 123904.

The previous prime is 259801. The next prime is 259813. The reversal of 259808 is 808952.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259801) by changing a digit.

259808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560 + ... + 912.

It is an arithmetic number, because the mean of its divisors is an integer number (22302).

2²⁵⁹⁸⁰⁸ 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 259808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267624).

259808 is an abundant number, since it is smaller than the sum of its proper divisors (275440).

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

259808 is a wasteful number, since it uses less digits than its factorization.

259808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 259808 is about 509.7136450989. The cubic root of 259808 is about 63.8093283399.

The spelling of 259808 in words is "two hundred fifty-nine thousand, eight hundred eight".