1220405

1,220,405 is an odd composite number composed of three prime numbers multiplied together.

What does the number 1220405 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

1220405 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 1220405:

5 × 67 × 3643

See below for interesting mathematical facts about the number 1220405 from the Numbermatics database.

Names of 1220405

Cardinal: 1220405 can be written as One million, two hundred twenty thousand, four hundred five.

Scientific notation

Scientific notation: 1.220405 × 10⁶

Factors of 1220405

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 3715

Divisors of 1220405

Number of divisors d(n): 8
Complete list of divisors:
1 5 67 335 3643 18215 244081 1220405
Sum of all divisors σ(n): 1486752
Sum of proper divisors (its aliquot sum) s(n): 266347
1220405 is a deficient number, because the sum of its proper divisors (266347) is less than itself. Its deficiency is 954058

Bases of 1220405

Binary: 100101001111100110101₂
Hexadecimal: 0x129F35
Base-36: Q5O5

Squares and roots of 1220405

1220405 squared (1220405²) is 1489388364025
1220405 cubed (1220405³) is 1817657006397930125
The square root of 1220405 is 1104.7194213917
The cube root of 1220405 is 106.8647956013

Scales and comparisons

How big is 1220405?

1,220,405 seconds is equal to 2 weeks, 3 hours, 5 seconds.
To count from 1 to 1,220,405 would take you about three weeks!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 1220405 cubic inches would be around 8.9 feet tall.

Recreational maths with 1220405

1220405 backwards is 5040221
The number of decimal digits it has is: 7
The sum of 1220405's digits is 14
More coming soon!

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The information we have on file for 1220405 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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