Number 210
1. (21, 20, 29) and (35, 12, 37) are the two least primitive Pythagorean triangles with different hypotenuses and the same area (=210).
2. It is the product of first four prime number
210 = 2 x 3 x 5 x 7
3. It is the sum of 8 consecutive prime numbers.
13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 = 210
4. It is a triangular Number.
190 210 231
5. It is a Harshad Number. To know more about Harshad Number. Harshad number was discovered by Indian Mathematician Kapekar.
6. It is a Pronic Number. Pronic number is a number which is the product of n and n+ 1
210 = 14 x 15
7. It is an abundant Number. Abundant number is a number whose sum of proper divisor is more than the number.
12 is the first abundant number.
Factor of 12 are 1, 2, 3, 4 and 6
1 + 2 + 3 + 4 + 6 > 12
8. It is a composite number, even number and pentagonal number.
Dr Rajesh Kumar Thakur
1. (21, 20, 29) and (35, 12, 37) are the two least primitive Pythagorean triangles with different hypotenuses and the same area (=210).
2. It is the product of first four prime number
210 = 2 x 3 x 5 x 7
3. It is the sum of 8 consecutive prime numbers.
13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 = 210
4. It is a triangular Number.
190 210 231
5. It is a Harshad Number. To know more about Harshad Number. Harshad number was discovered by Indian Mathematician Kapekar.
6. It is a Pronic Number. Pronic number is a number which is the product of n and n+ 1
210 = 14 x 15
7. It is an abundant Number. Abundant number is a number whose sum of proper divisor is more than the number.
12 is the first abundant number.
Factor of 12 are 1, 2, 3, 4 and 6
1 + 2 + 3 + 4 + 6 > 12
8. It is a composite number, even number and pentagonal number.
Dr Rajesh Kumar Thakur
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