128270 has 16 divisors (see below), whose sum is σ = 235008. Its totient is φ = 50400.

The previous prime is 128257. The next prime is 128273. The reversal of 128270 is 72821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128273) 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, 947 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (14688).

2¹²⁸²⁷⁰ is an apocalyptic number.

128270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128270 is a deficient number, since it is larger than the sum of its proper divisors (106738).

128270 is a wasteful number, since it uses less digits than its factorization.

128270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 128270 is about 358.1480140947. The cubic root of 128270 is about 50.4322523890.

The spelling of 128270 in words is "one hundred twenty-eight thousand, two hundred seventy".