260840 has 16 divisors (see below), whose sum is σ = 586980. Its totient is φ = 104320.

The previous prime is 260809. The next prime is 260849. The reversal of 260840 is 48062.

260840 is nontrivially palindromic in base 14.

260840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 8836 = 502^2 + 94^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (260849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3221 + ... + 3300.

2²⁶⁰⁸⁴⁰ is an apocalyptic number.

260840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260840 is an abundant number, since it is smaller than the sum of its proper divisors (326140).

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

260840 is a wasteful number, since it uses less digits than its factorization.

260840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532 (or 6528 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 260840 is about 510.7249749131. The cubic root of 260840 is about 63.8937037609.

The spelling of 260840 in words is "two hundred sixty thousand, eight hundred forty".