128266 has 8 divisors (see below), whose sum is σ = 195840. Its totient is φ = 62988.

The previous prime is 128257. The next prime is 128273. The reversal of 128266 is 662821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (24480).

2¹²⁸²⁶⁶ is an apocalyptic number.

128266 is a deficient number, since it is larger than the sum of its proper divisors (67574).

128266 is a wasteful number, since it uses less digits than its factorization.

128266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148.

The product of its digits is 1152, while the sum is 25.

The square root of 128266 is about 358.1424297678. The cubic root of 128266 is about 50.4317281534.

The spelling of 128266 in words is "one hundred twenty-eight thousand, two hundred sixty-six".