128418 has 16 divisors (see below), whose sum is σ = 272160. Its totient is φ = 40256.

The previous prime is 128413. The next prime is 128431. The reversal of 128418 is 814821.

It is not an unprimeable number, because it can be changed into a prime (128411) 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, 528 + ... + 731.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2¹²⁸⁴¹⁸ is an apocalyptic number.

128418 is an abundant number, since it is smaller than the sum of its proper divisors (143742).

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

128418 is a wasteful number, since it uses less digits than its factorization.

128418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281.

The product of its digits is 512, while the sum is 24.

The square root of 128418 is about 358.3545730139. The cubic root of 128418 is about 50.4516414499.

The spelling of 128418 in words is "one hundred twenty-eight thousand, four hundred eighteen".