381688740
381,688,740 is an even composite number composed of five prime numbers multiplied together.
381688740 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 381688740:
22 × 33 × 5 × 31 × 1512
(2 × 2 × 3 × 3 × 3 × 5 × 31 × 151 × 151)See below for interesting mathematical facts about the number 381688740 from the Numbermatics database.
Names of 381688740
- Cardinal: 381688740 can be written as Three hundred eighty-one million, six hundred eighty-eight thousand, seven hundred forty.
Scientific notation
- Scientific notation: 3.8168874 × 108
Factors of 381688740
Divisors of 381688740
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 27 30 31 36 45 54 60 62 90 93 108 124 135 151 155 180 186 270 279 302 310 372 453 465 540 558 604 620 755 837 906 930 1116 1359 1395 1510 1674 1812 1860 2265 2718 2790 3020 3348 4077 4185 4530 4681 5436 5580 6795 8154 8370 9060 9362 13590 14043 16308 16740 18724 20385 22801 23405 27180 28086 40770 42129 45602 46810 56172 68403 70215 81540 84258 91204 93620 114005 126387 136806 140430 168516 205209 210645 228010 252774 273612 280860 342015 410418 421290 456020 505548 615627 631935 684030 706831 820836 842580 1026045 1231254 1263870 1368060 1413662 2052090 2120493 2462508 2527740 2827324 3078135 3534155 4104180 4240986 6156270 6361479 7068310 8481972 10602465 12312540 12722958 14136620 19084437 21204930 25445916 31807395 38168874 42409860 63614790 76337748 95422185 127229580 190844370 381688740
- Sum of all divisors σ(n): 1233953280
- Sum of proper divisors (its aliquot sum) s(n): 852264540
- 381688740 is an abundant number, because the sum of its proper divisors (852264540) is greater than itself. Its abundance is 470575800
Bases of 381688740
- Binary: 101101100000000011011101001002
- Hexadecimal: 0x16C01BA4
- Base-36: 6B8WX0
Squares and roots of 381688740
- 381688740 squared (3816887402) is 145686294242787600
- 381688740 cubed (3816887403) is 55606818084798853131624000
-
The
square root of 381688740 is 19536.8559394801 -
The
cube root of 381688740 is 725.3870244333
Scales and comparisons
How big is 381688740?- 381,688,740 seconds is equal to 12 years, 7 weeks, 16 hours, 39 minutes.
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To count from 1 to 381,688,740 would take you about eighteen years!
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 381688740 cubic inches would be around 60.4 feet tall.
Recreational maths with 381688740
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