Manuals/calci/ISINTEGER

ISINTEGER (Number)

• $Number$ is any number to test.
  • ISINTEGER(), returns TRUE if the number is an Integer.

Description

• This function is one of the group in ISFUNCTIONS.
• The IS FUNCTION is also known as data information functions, data inspection functions or data-testing functions.
• ISINTEGER function can be used to check the given value is integer or not.
• Here the number can be either positive or negative.
• This function gives the result as only TRUE or FALSE.
• The result is TRUE when the n value is Integer otherwise the result is FALSE.
• The argument can be blank, or it can contain data such as text, numbers, error values, logical values or any equations.
• This function will convert any numbers from text.
• For e.g. "20" is normally converted as a number 20.
• But in ISINTEGER("20") will return TRUE, because "20" will convert in to number.

Safe Integer

• ISSAFEINTEGER("15") = true
• ISSAFEINTEGER("15.34") = false

Abundant Numbers

• Abundant number is a number for which the sum of its proper divisors is greater than the number itself.
• It is also called Excessive Number.
• The first Abundant number is 12.
• ISABUNDANTNUMBER(6) = false
• ISABUNDANTNUMBER(20) = true
• ISABUNDANTNUMBER(1..12) = false false false false false false false false false false false true

Deficient Numbers

• Deficient number is a number $n$ for which the sum of divisors $\sigma (n)<2n$, or, equivalently, the sum of proper divisors (or aliquot sum) $s(n)<n$. The value $2n$ − $\sigma (n)$ (or $n$ − $s(n)$) is called the number's deficiency.
• ISDEFICIENTNUMBER(6) = false
• ISDEFICIENTNUMBER(1..10) = false true true true true false true true true true

Examples

1. ISINTEGER(15) = true
2. ISINTEGER(-34) = true
3. ISINTEGER(1/2) = false
4. ISINTEGER("78") = true

Related Videos

ISINTEGERS

See Also

• ISODD
• ISNUMBER

References

Is Function

• List of Main Z Functions

• Z3 home