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The number 78 has several interesting attributes. Mathematically, it is an even composite number and can be expressed as the product of the primes 2 and 39 (2 × 39). It is also a triangular number, being the sum of the first 12 natural numbers (1 + 2 + 3 + ... + 12 = 78). In chemistry, 78 is the atomic number of platinum, a precious metal known for its use in jewelry, catalytic converters, and various industrial applications due to its resistance to corrosion. Historically, the year 78 AD marked the beginning of the Saka Era in India. Additionally, in numerology, 78 is often associated with business and relationships, symbolizing pragmatism and harmony.