128206 has 8 divisors (see below), whose sum is σ = 207144. Its totient is φ = 59160.

The previous prime is 128203. The next prime is 128213. The reversal of 128206 is 602821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2440 + ... + 2491.

It is an arithmetic number, because the mean of its divisors is an integer number (25893).

2¹²⁸²⁰⁶ is an apocalyptic number.

128206 is a deficient number, since it is larger than the sum of its proper divisors (78938).

128206 is a wasteful number, since it uses less digits than its factorization.

128206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946.

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

The square root of 128206 is about 358.0586544129. The cubic root of 128206 is about 50.4238633110.

The spelling of 128206 in words is "one hundred twenty-eight thousand, two hundred six".