128260 has 36 divisors (see below), whose sum is σ = 301644. Its totient is φ = 45760.

The previous prime is 128257. The next prime is 128273. The reversal of 128260 is 62821.

128260 = T₂₂₄ + T₂₂₅ + ... + T₂₂₈.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69696 + 58564 = 264^2 + 242^2 .

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2394 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (8379).

2¹²⁸²⁶⁰ is an apocalyptic number.

128260 is a gapful number since it is divisible by the number (10) 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 128260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150822).

128260 is an abundant number, since it is smaller than the sum of its proper divisors (173384).

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

128260 is a wasteful number, since it uses less digits than its factorization.

128260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 128260 is about 358.1340531142. The cubic root of 128260 is about 50.4309417796.

The spelling of 128260 in words is "one hundred twenty-eight thousand, two hundred sixty".