128466 has 40 divisors (see below), whose sum is σ = 315084. Its totient is φ = 38880.

The previous prime is 128461. The next prime is 128467. The reversal of 128466 is 664821.

It can be written as a sum of positive squares in 2 ways, for example, as 99225 + 29241 = 315^2 + 171^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (128461) 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 19 ways as a sum of consecutive naturals, for example, 2076 + ... + 2136.

2¹²⁸⁴⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157542).

128466 is an abundant number, since it is smaller than the sum of its proper divisors (186618).

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

128466 is a wasteful number, since it uses less digits than its factorization.

128466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 79 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 128466 is about 358.4215395313. The cubic root of 128466 is about 50.4579265946.

The spelling of 128466 in words is "one hundred twenty-eight thousand, four hundred sixty-six".