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The area out of a rectangular with diagonal 34 is actually 578. It is palindromic in the feet 16 (24216), and is a great nontotient. It is the sum of four successive primes (137 + 139 + 149 + 151). It’s a very totient count, an excellent Smith number, a keen untouchable number, a great Harshad number, and you can a cake number. (más…)