260000 has 60 divisors (see below), whose sum is σ = 688842. Its totient is φ = 96000.

The previous prime is 259993. The next prime is 260003. The reversal of 260000 is 62.

It can be written as a sum of positive squares in 5 ways, for example, as 1936 + 258064 = 44^2 + 508^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 260000.

It is not an unprimeable number, because it can be changed into a prime (260003) by changing a digit.

260000 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 9 ways as a sum of consecutive naturals, for example, 19994 + ... + 20006.

2²⁶⁰⁰⁰⁰ is an apocalyptic number.

260000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344421).

260000 is an abundant number, since it is smaller than the sum of its proper divisors (428842).

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

260000 is an equidigital number, since it uses as much as digits as its factorization.

260000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 260000 is about 509.9019513593. The cubic root of 260000 is about 63.8250429886.

Adding to 260000 its reverse (62), we get a palindrome (260062).

The spelling of 260000 in words is "two hundred sixty thousand".