• 978 is the smallest number which is pandigital in all the bases from 2 to 5.
978 is nontrivially palindromic in base 12.
978 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
978 is an admirable number.
978 is an undulating number in base 12.
978 is strictly pandigital in base 5.
It is a nialpdrome in base 6.
978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
978 is a wasteful number, since it uses less digits than its factorization.
978 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 168.
The square root of 978 is about 31.2729915422. The cubic root of 978 is about 9.9261222181.
Subtracting from 978 its product of digits (504), we obtain a palindrome (474).
Subtracting from 978 its reverse (879), we obtain a palindrome (99).