128280 has 32 divisors (see below), whose sum is σ = 385200. Its totient is φ = 34176.

The previous prime is 128273. The next prime is 128287. The reversal of 128280 is 82821.

It is an interprime number because it is at equal distance from previous prime (128273) and next prime (128287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 654.

2¹²⁸²⁸⁰ is an apocalyptic number.

128280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128280 is an abundant number, since it is smaller than the sum of its proper divisors (256920).

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

128280 is a wasteful number, since it uses less digits than its factorization.

128280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 128280 is about 358.1619745311. The cubic root of 128280 is about 50.4335629304.

The spelling of 128280 in words is "one hundred twenty-eight thousand, two hundred eighty".