Using Python to Check if Number is Divisible by Another Number

To check if a number is divisible by another number, you can use the Python built in remainder operator %. If the remainder after division is 0, then the number is divisible by the number you divided by.

def divisible_by(x, y):
    if (x % y) == 0:
        return True
    else: 
        return False

print(divisible_by(10,2))
print(divisible_by(15,6))

#Output:
True
False

When working with numbers in Python, it can be useful to know if the numbers you are working with are divisible by certain numbers.

We can use the Python built in remainder operator % to get the remainder of a number after division.

If the remainder after division is 0, then the number is divisible by the number you divided by.

Below is an example of a function which will check if a number is divisible by another number in Python.

def divisible_by(x, y):
    if (x % y) == 0:
        return True
    else: 
        return False

print(divisible_by(10,2))
print(divisible_by(15,6))

#Output:
True
False

How to Check if a Number is Divisible by Another Number

Using the Python remainder operator %, we can determine if a number is divisible by any other number.

For example, to check if a number is divisible by 2 using Python, we divide by 2. If the remainder after division is 0, then the number is the number is divisible by 2. If it is not 0, then the number is not divisible by 2.

Below is a function which will check if a number is divisible by 2 in Python.

def isDivisibleBy2(num):
    if (num % 2) == 0:
        return True
    else:
        return False

print(isDivisibleBy2(10))
print(isDivisibleBy2(15))

#Output:
True
False

If we want to check if a number is divisible by 3, just put 3 after the % operator.

def isDivisibleBy3(num):
    if (num % 3 == 0:
        return True
    else:
        return False

print(isDivisibleBy3(10))
print(isDivisibleBy3(15))

#Output:
False
True

How to Check if a Number is Even or Odd Using Python

We can also use % to check if a number is even or odd very easily with the Python built in remainder operator %. If the remainder of a number after dividing by 2 is 0, then the number is even. If not, the number is odd.

def isEven(num):
    if (num % 2) == 0:
        return True
    else:
        return False

print(isEven(10))
print(isEven(15))

#Output:
True
False

Hopefully this article has been useful for you to learn how to check if a number is divisible by another number in Python.