2978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a plaindrome in base 11 and base 14.
It is a nialpdrome in base 16.
2978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2978 is a wasteful number, since it uses less digits than its factorization.
2978 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1491.
The square root of 2978 is about 54.5710545986. The cubic root of 2978 is about 14.3871541819.
The spelling of 2978 in words is "two thousand, nine hundred seventy-eight".