## What’s a perfect number in math?

Perfect number, a positive integer that is equal to the sum of its proper divisors.

The smallest perfect number is 6, which is the sum of 1, 2, and 3.

Other perfect numbers are 28, 496, and 8,128..

## What kind of number is 30?

30 (thirty) is the natural number following 29 and preceding 31….30 (number)← 29 30 31 →← 30 31 32 33 34 35 36 37 38 39 → List of numbers — Integers ← 0 10 20 30 40 50 60 70 80 90 →CardinalthirtyOrdinal30th (thirtieth)Numeral systemtrigesimal9 more rows

## Why is 27 a lucky number?

One of the supreme numbers in their numerology is number 27. They believed that this number may give a person the highest Siddhi (or, a spiritual gift), also known as Gnana Sidhi or Gyan Siddhi, which means that this person has the highest wisdom, without having to search for love from others.

## Why is 28 a special number?

In mathematics Twenty-eight is the second perfect number – it’s the sum of its divisors: 1+2+4+7+14. As a perfect number, it is related to the Mersenne prime 7, since 2(23 − 1) = 28. The next perfect number is 496, the previous being 6. Twenty-eight is the sum of the totient function for the first nine integers.

## Is 27 an evil number?

Examples. The first evil numbers are: 0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 24, 27, 29, 30, 33, 34, 36, 39 …

## What number means death?

Unlucky 4. While only a few numbers are considered unlucky in China, the number 4 is the most unlucky as it rhymes with the word that means death.

## What is the most evil number?

sum to 666 is known as an evil number (Pegg and Lomont 2004). However, the term “evil” is also used to denote nonnegative integers that have an even number of 1s in their binary expansions, the first few of which are 0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, …

## Is 23 a lucky number?

In these works, 23 is considered lucky, unlucky, sinister, strange, sacred to the goddess Eris, or sacred to the unholy gods of the Cthulhu Mythos. The 23 enigma can be viewed as an example of apophenia, selection bias, and confirmation bias.

## What is the meaning of 13?

The number 13 brings the test, the suffering and the death. It symbolises the death to the matter or to oneself and the birth to the spirit: the passage on a higher level of existence. (In Tarot, no. 13 card is named as Death, but it mostly means death of a struggling period and new beginning s.

## What kind of number is 27?

27 is also a decagonal number. In decimal, it is the first composite number not divisible by any of its digits. It is the radix (base) of the septemvigesimal positional numeral system. 27 is the only positive integer that is 3 times the sum of its digits.

## What number is a score?

20 (twenty) is the natural number following 19 and preceding 21. A group of twenty units may also be referred to as a score.