# Manuals/calci/ISNUMBER

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**ISNUMBER(Number)**

- is any number.
- ISNUMBER(),Returns TRUE if the value is a number.

## Description

- This function is one of the group in .
- The is also known as data information functions, data inspection functions or data-testing functions.
- is used to test given value is number or not.
- This function gives the result as TRUE when the given value is the number otherwise this function gives th result as FALSE.
- This function will not convert any numbers from text.
- For e.g. "20" is normally converted as a number 20. But in ISNUMBER("20") will return FALSE, because "20" will not convert in to number.

## ZOS

- The syntax is to find whether the given data is a number in ZOS is .
- is any number.

- For e.g.,ISNUMBER(log(20)),ISNUMBER(SUM(10,20,30,40,50))

## Examples

- =ISNUMBER(2) = TRUE
- =ISNUMBER(0) = TRUE
- =ISNUMBER(-100) = TRUE
- =ISNUMBER(y) = NULL
- =ISNUMBER($) = FALSE
- =ISNUMBER("17") = TRUE

## Related Videos

## See Also

## References