240
1. It is a semiperfect number.
2. It is a highly composite number since it has 20 divisors total (1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, and 240), more than any previous number.
3. It is a refactorable number or tau number, since it has 20 divisors and 20 divides 240.
4. It is a pronic number since it is the product of 2 consecutive number
240 = 15 × 16
5. 240 can be expressed as a sum of consecutive primes in two different ways: 240 = 53 + 59 + 61 + 67
= 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43.
6. It is the product of 6 Fibonacci number.
240= 1 × 1 × 2 × 3× 5× 8
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