It is a sphenic number, since it is the product of 3 distinct primes.
It is a Leyland number of the form 113 + 311.
It is a nialpdrome in base 13.
It is a congruent number.
It is an unprimeable number.
178478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2178478 is an apocalyptic number.
178478 is a wasteful number, since it uses less digits than its factorization.
178478 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 618.
The square root of 178478 is about 422.4665667245. The cubic root of 178478 is about 56.3025714274.
The spelling of 178478 in words is "one hundred seventy-eight thousand, four hundred seventy-eight".