128478 has 48 divisors (see below), whose sum is σ = 328320. Its totient is φ = 33264.

The previous prime is 128477. The next prime is 128483. The reversal of 128478 is 874821.

128478 is nontrivially palindromic in base 12.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5575 + ... + 5597.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2¹²⁸⁴⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164160).

128478 is an abundant number, since it is smaller than the sum of its proper divisors (199842).

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

128478 is a wasteful number, since it uses less digits than its factorization.

128478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 54 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 128478 is about 358.4382792058. The cubic root of 128478 is about 50.4594976361.

It can be divided in two parts, 128 and 478, that added together give a palindrome (606).

The spelling of 128478 in words is "one hundred twenty-eight thousand, four hundred seventy-eight".