31380000
31,380,000 is an even composite number composed of four prime numbers multiplied together.
31380000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 31380000:
25 × 3 × 54 × 523
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 5 × 5 × 523)See below for interesting mathematical facts about the number 31380000 from the Numbermatics database.
Names of 31380000
- Cardinal: 31380000 can be written as Thirty-one million, three hundred eighty thousand.
Scientific notation
- Scientific notation: 3.138 × 107
Factors of 31380000
Divisors of 31380000
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 125 150 160 200 240 250 300 375 400 480 500 523 600 625 750 800 1000 1046 1200 1250 1500 1569 1875 2000 2092 2400 2500 2615 3000 3138 3750 4000 4184 5000 5230 6000 6276 7500 7845 8368 10000 10460 12000 12552 13075 15000 15690 16736 20000 20920 25104 26150 30000 31380 39225 41840 50208 52300 60000 62760 65375 78450 83680 104600 125520 130750 156900 196125 209200 251040 261500 313800 326875 392250 418400 523000 627600 653750 784500 980625 1046000 1255200 1307500 1569000 1961250 2092000 2615000 3138000 3922500 5230000 6276000 7845000 10460000 15690000 31380000
- Sum of all divisors σ(n): 103129488
- Sum of proper divisors (its aliquot sum) s(n): 71749488
- 31380000 is an abundant number, because the sum of its proper divisors (71749488) is greater than itself. Its abundance is 40369488
Bases of 31380000
- Binary: 11101111011010010001000002
- Hexadecimal: 0x1DED220
- Base-36: IOKYO
Squares and roots of 31380000
- 31380000 squared (313800002) is 984704400000000
- 31380000 cubed (313800003) is 30900024072000000000000
-
The
square root of 31380000 is 5601.7854296643 -
The
cube root of 31380000 is 315.4164308423
Scales and comparisons
How big is 31380000?- 31,380,000 seconds is equal to 51 weeks, 6 days, 4 hours, 40 minutes.
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To count from 1 to 31,380,000 would take you about twenty-five 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 31380000 cubic inches would be around 26.3 feet tall.
Recreational maths with 31380000
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