- Why is 7 the perfect number?
- Is 12 a perfect number?
- Why is 28 a perfect number?
- What kind of number is 1?
- What is the mystery number?
- What is the rarest number?
- Is 1 a special number?
- Why is 11 not a prime number?
- Is 1 a odd number?
- What is the most special number?
- Why is 6174 a magic number?
- Whats the best number?

## Why is 7 the perfect number?

Seven is the number of completeness and perfection (both physical and spiritual).

It derives much of its meaning from being tied directly to God’s creation of all things.

…

The word ‘created’ is used 7 times describing God’s creative work (Genesis 1:1, 21, 27 three times; 2:3; 2:4)..

## Is 12 a perfect number?

Twelve is a sublime number, a number that has a perfect number of divisors, and the sum of its divisors is also a perfect number. Since there is a subset of 12’s proper divisors that add up to 12 (all of them but with 4 excluded), 12 is a semiperfect number. … A twelve-sided polygon is a dodecagon.

## Why is 28 a perfect number?

A number is perfect if all of its factors, including 1 but excluding itself, perfectly add up to the number you began with. 6, for example, is perfect, because its factors — 3, 2, and 1 — all sum up to 6. 28 is perfect too: 14, 7, 4, 2, and 1 add up to 28.

## What kind of number is 1?

Main types ): The counting numbers {1, 2, 3, …} are commonly called natural numbers; however, other definitions include 0, so that the non-negative integers {0, 1, 2, 3, …} are also called natural numbers. Natural numbers including 0 are also called whole numbers.

## What is the mystery number?

A mystery number is that number which can be expressed as sum of two numbers and those two numbers should be reverse of each other. Examples: Input : n = 121.

## What is the rarest number?

Other examples of rare numbers are 65, 621770, 281089082, 2022652202, 868591084757, 872546974178 … (Sequence A035519 of OEIS). If we consider palindromic rare numbers, there are infinitely many rare numbers.

## Is 1 a special number?

The number one is far more special than a prime! It is the unit (the building block) of the positive integers, hence the only integer which merits its own existence axiom in Peano’s axioms. … It is the only perfect nth power for all positive integers n. It is the only positive integer with exactly one positive divisor.

## Why is 11 not a prime number?

For 11, the answer is: yes, 11 is a prime number because it has only two distinct divisors: 1 and itself (11). As a consequence, 11 is only a multiple of 1 and 11.

## Is 1 a odd number?

An odd number is an integer when divided by two, either leaves a remainder or the result is a fraction. One is the first odd positive number but it does not leave a remainder 1. Some examples of odd numbers are 1, 3, 5, 7, 9, and 11. … Since odd numbers are integers, negative numbers can be odd.

## What is the most special number?

Therefore the number 6174 is the only number unchanged by Kaprekar’s operation — our mysterious number is unique. The number 495 is the unique kernel for the operation on three digit numbers, and all three digit numbers reach 495 using the operation.

## Why is 6174 a magic number?

6174 is a harshad number, since it is divisible by the sum of its digits: 6174 is a 7-smooth number, i.e. none of its prime factors are greater than 7. 6174 can be written as the sum of the first three degrees of 18: 183 + 182 + 181 = 5832 + 324 + 18 = 6174.

## Whats the best number?

Because of these two properties, it is the sole Sheldon prime, an homage to Sheldon Cooper, the fictional theoretical physicist on the television show The Big Bang Theory who claimed that 73 is the best number. the smallest prime with a composite sum of digits, in base 5.