128738834840
128,738,834,840 is an even composite number composed of six prime numbers multiplied together.
128738834840 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 128738834840:
23 × 5 × 74 × 11 × 31 × 3931
(2 × 2 × 2 × 5 × 7 × 7 × 7 × 7 × 11 × 31 × 3931)See below for interesting mathematical facts about the number 128738834840 from the Numbermatics database.
Names of 128738834840
- Cardinal: 128738834840 can be written as One hundred twenty-eight billion, seven hundred thirty-eight million, eight hundred thirty-four thousand, eight hundred forty.
Scientific notation
- Scientific notation: 1.2873883484 × 1011
Factors of 128738834840
Divisors of 128738834840
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 4 5 7 8 10 11 14 20 22 28 31 35 40 44 49 55 56 62 70 77 88 98 110 124 140 154 155 196 217 220 245 248 280 308 310 341 343 385 392 434 440 490 539 616 620 682 686 770 868 980 1078 1085 1240 1364 1372 1519 1540 1705 1715 1736 1960 2156 2170 2387 2401 2695 2728 2744 3038 3080 3410 3430 3773 3931 4312 4340 4774 4802 5390 6076 6820 6860 7546 7595 7862 8680 9548 9604 10633 10780 11935 12005 12152 13640 13720 15092 15190 15724 16709 18865 19096 19208 19655 21266 21560 23870 24010 26411 27517 30184 30380 31448 33418 37730 39310 42532 43241 47740 48020 52822 53165 55034 60760 66836 74431 75460 78620 83545 85064 86482 95480 96040 105644 106330 110068 116963 121861 132055 133672 137585 148862 150920 157240 167090 172964 192619 211288 212660 216205 220136 233926 243722 264110 275170 297724 302687 334180 345928 372155 385238 425320 432410 467852 487444 528220 550340 584815 595448 605374 609305 668360 744310 770476 818741 853027 864820 935704 963095 974888 1056440 1100680 1169630 1210748 1218610 1340471 1348333 1488620 1513435 1540952 1637482 1706054 1729640 1926190 2118809 2339260 2421496 2437220 2680942 2696666 2977240 3026870 3274964 3412108 3852380 4093705 4237618 4265135 4678520 4874440 5361884 5393332 5971189 6053740 6549928 6702355 6741665 6824216 7704760 8187410 8475236 8530270 9383297 9438331 10594045 10723768 10786664 11942378 12107480 13404710 13483330 14831663 16374820 16950472 17060540 18766594 18876662 21188090 23884756 26809420 26966660 29663326 29855945 32749640 34121080 37533188 37753324 41798323 42376180 46916485 47191655 47769512 53618840 53933320 59326652 59711890 65683079 74158315 75066376 75506648 83596646 84752360 93832970 94383310 103821641 118653304 119423780 131366158 148316630 167193292 187665940 188766620 207643282 208991615 238847560 262732316 292588261 296633260 328415395 334386584 375331880 377533240 415286564 417983230 459781553 519108205 525464632 585176522 593266520 656830790 830573128 835966460 919563106 1038216410 1170353044 1313661580 1462941305 1671932920 1839126212 2076432820 2298907765 2340706088 2627323160 2925882610 3218470871 3678252424 4152865640 4597815530 5851765220 6436941742 9195631060 11703530440 12873883484 16092354355 18391262120 25747766968 32184708710 64369417420 128738834840
- Sum of all divisors σ(n): 380627665920
- Sum of proper divisors (its aliquot sum) s(n): 251888831080
- 128738834840 is an abundant number, because the sum of its proper divisors (251888831080) is greater than itself. Its abundance is 123149996240
Bases of 128738834840
- Binary: 11101111110010110111010111001100110002
- Hexadecimal: 0x1DF96EB998
- Base-36: 1N53S0PK
Squares and roots of 128738834840
- 128738834840 squared (1287388348402) is 16573687595960797825600
- 128738834840 cubed (1287388348403) is 2133677230106153802384549523904000
-
The
square root of 128738834840 is 358801.9437517027 -
The
cube root of 128738834840 is 5049.3622021037
Scales and comparisons
How big is 128738834840?- 128,738,834,840 seconds is equal to 4,093 years, 25 weeks, 5 days, 19 hours, 27 minutes, 20 seconds.
-
To count from 1 to 128,738,834,840 would take you about eight thousand, one hundred eighty-six 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 128738834840 cubic inches would be around 420.8 feet tall.
Recreational maths with 128738834840
- 128738834840 backwards is 048438837821
- 128738834840 is a
Harshad number . - The number of decimal digits it has is: 12
- The sum of 128738834840's digits is 56
- More coming soon!
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