Subtracting from 78432 its reverse (23487), we obtain a palindrome (54945).
78432 is nontrivially palindromic in base 7.
It is a tau number, because it is divible by the number of its divisors (48).
It is a d-powerful number, because it can be written as 75 + 83 + 42 + 310 + 211 .
78432 is a nontrivial repdigit in base 7.
It is a plaindrome in base 7.
It is a nialpdrome in base 7.
It is a zygodrome in base 7.
It is a congruent number.
278432 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 78432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78432 is a wasteful number, since it uses less digits than its factorization.
78432 is an evil number, because the sum of its binary digits is even.
The square root of 78432 is about 280.0571370274. The cubic root of 78432 is about 42.8053214916.
The spelling of 78432 in words is "seventy-eight thousand, four hundred thirty-two".