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73 in words

73

seventy-three

73 is written seventy-three.

Ways to write it

As an ordinal: seventy-third
Roman numeral: LXXIII
Expanded form: 70 + 3

Place value

Place	Digit	Value
tens	7	70
ones	3	3

Number facts

Even or odd: Odd
Prime or composite: Prime
Factors: 1 and 73 (2 factors)
First 10 multiples: 73, 146, 219, 292, 365, 438, 511, 584, 657, 730
Square: 73 × 73 = 5,329
Square root: ≈ 8.54
Sum of the digits: 7 + 3 = 10
Rounded to the nearest 10: 70
Number before: 72
Number after: 74
In binary: 1001001

Quick check

What number comes just after 73?
Show the answer
74
Is 73 even or odd?
Show the answer
Odd
What is 73 + 10?
Show the answer
83

Practice with a game

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Frequently asked questions

How do you write 73 in words?

73 is written "seventy-three".

Is 73 a prime number?

Yes. 73 is a prime number: its only factors are 1 and 73.

What are the factors of 73?

The factors of 73 are 1 and 73.

How do you write 73 in Roman numerals?

73 in Roman numerals is LXXIII.