256378

256,378 is a natural number. It is even and composite. Its prime factorization is 2 × 128,189, where 128,189 is prime; thus 256,378 is a semiprime (the product of two distinct primes). Its positive divisors are 1, 2, 128,189, and 256,378.

In different numeral systems, it is written as decimal 256,378, hexadecimal 0x3E97A, and binary 111110100101111010.

Properties: The sum of its decimal digits is 31, so it is not divisible by 3 or 9. Its Euler totient is φ(256,378) = (2−1)(128,189−1) = 128,188. It is not a perfect square or a prime. Its divisor count is four.

Context: As a specific semiprime, 256,378 can serve as a basic example in discussions of prime factorization and divisor structure. It does not correspond to a widely known constant, theorem, or notable entry in common mathematical sequences, and it does not have prominent significance outside its role as a concrete composite number.