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# Numbers Over 2020: Properties and Meanings

### Number 4900

The only numbers which are simultaneously square and square pyramidal are 1 and**4900**.

### Number 5400

In*Laws*, Plato suggests that

**5040**is the optimal number of citizens in a state because:

1. It is the product of 12, 20, and 21.

2. The 12th part of it can still be divided by 12.

3. It has 59 proper divisors, including all numbers for 1 to 12 except 11, and

**5038**--which is very close to

**5040**--is divisible by 11

1 x2 x 3 x 4 x 5 x 6 x 7 =

**5040**

7 x8 x 9 x 10 =

**5040**

### Number 84000

The illnesses of the mind arise from the three poisons of greed, anger and stupidity and are of**eighty-four thousand**kinds.

### Number 432000

Some cultures measure time in terms of very long cycles. In the Hindu tradition the present cycle of time consists of**432000**years. This is called the "Kali Yuga". The great cycle in which the Kali Yuga falls consists of

**4,320,000**years.

According to the Satapatha Brahmana, the number of syllables in the Rigveda is

**432,000**, equalling the number of muhurtas (1 day = 30 muhurtas) inforty years.

The Icelandic tradition tells of the great warrior hall in which there were 540 doors. Through each door there would come 800 divine warriors: 800 x 540 =

**432000**warriors.

### Number 12960000

The positive integers 216 and**12960000**appear in an obscure passage in Plato's

*The Republic*. In this passage, Plato alludes to the fact that 216 is equal to 6 cubed, where 6 is one of the numbers representing marriage since it is the product to the female 2 and the male 3. Plato was also aware of the fact the sum of the cubes of the 3-4-5 Pythagorean triple is equal to 216).

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