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16 in words

16

sixteen

16 is written sixteen.

Ways to write it

As an ordinal: sixteenth
Roman numeral: XVI
Expanded form: 10 + 6

Place value

Place	Digit	Value
tens	1	10
ones	6	6

Number facts

Even or odd: Even
Prime or composite: Composite
Factors: 1, 2, 4, 8 and 16 (5 factors)
First 10 multiples: 16, 32, 48, 64, 80, 96, 112, 128, 144, 160
Square: 16 × 16 = 256
Square root: 4
Sum of the digits: 1 + 6 = 7
Rounded to the nearest 10: 20
Number before: 15
Number after: 17
In binary: 10000

Quick check

What number comes just after 16?
Show the answer
17
Is 16 even or odd?
Show the answer
Even
What is 16 + 10?
Show the answer
26

Practice with a game

Count with Me

Count pictures up to 5, 10 or 20 and compare groups.

Place Value Quest

Ones, tens, hundreds and thousands.

Times Tables Challenge

Practice any times table from 2× to 12×.

Frequently asked questions

How do you write 16 in words?

16 is written "sixteen".

Is 16 a prime number?

No. 16 is a composite number, because it has more than two factors.

What are the factors of 16?

The factors of 16 are 1, 2, 4, 8 and 16.

How do you write 16 in Roman numerals?

16 in Roman numerals is XVI.