260780 has 48 divisors (see below), whose sum is σ = 635040. Its totient is φ = 89088.

The previous prime is 260773. The next prime is 260791. The reversal of 260780 is 87062.

260780 is a modest number, since divided by 780 gives 260 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4391 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2²⁶⁰⁷⁸⁰ is an apocalyptic number.

260780 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 260780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317520).

260780 is an abundant number, since it is smaller than the sum of its proper divisors (374260).

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

260780 is a wasteful number, since it uses less digits than its factorization.

260780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 260780 is about 510.6662315055. Note that the first 3 decimals coincide. The cubic root of 260780 is about 63.8888043127. Note that the first 4 decimals are identical.

The spelling of 260780 in words is "two hundred sixty thousand, seven hundred eighty".