Primes / Is 378 prime?
Is 378 a Prime Number?
No378 = 2 x 3^3 x 7
378 is NOT prime: 2 × 189 = 378. That makes 2 a genuine divisor of 378 beyond 1 and 378 itself. Fully broken down, 378 = 2 × 3^3 × 7, for 16 divisors total. 378 sits between primes 373 and 379, 5 below and 1 above. 378: 2, 3, 6, 7, 9 divide 378 evenly, checked against 2-12. 378 is even, digit sum 18 for 378, digital root 9 for 378. 378 has 3 primes within 10 of 378.