12909507840

Names of 12909507840

• Cardinal: 12909507840 can be written as Twelve billion, nine hundred nine million, five hundred seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.290950784 × 10¹⁰

Factors of 12909507840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 124523

Divisors of 12909507840

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 128 135 144 160 162 180 192 216 240 256 270 288 320 324 360 384 405 432 480 540 576 640 648 720 768 810 864 960 1080 1152 1280 1296 1440 1620 1728 1920 2160 2304 2592 2880 3240 3456 3840 4320 5184 5760 6480 6912 8640 10368 11520 12960 17280 20736 25920 34560 51840 103680 124513 249026 373539 498052 622565 747078 996104 1120617 1245130 1494156 1867695 1992208 2241234 2490260 2988312 3361851 3735390 3984416 4482468 4980520 5603085 5976624 6723702 7470780 7968832 8964936 9961040 10085553 11206170 11953248 13447404 14941560 15937664 16809255 17929872 19922080 20171106 22412340 23906496 26894808 29883120 31875328 33618510 35859744 39844160 40342212 44824680 47812992 50427765 53789616 59766240 67237020 71719488 79688320 80684424 89649360 95625984 100855530 107579232 119532480 134474040 143438976 159376640 161368848 179298720 201711060 215158464 239064960 268948080 286877952 322737696 358597440 403422120 430316928 478129920 537896160 645475392 717194880 806844240 860633856 1075792320 1290950784 1434389760 1613688480 2151584640 2581901568 3227376960 4303169280 6454753920 12909507840
• Sum of all divisors σ(n): 46192950804
• Sum of proper divisors (its aliquot sum) s(n): 33283442964
• 12909507840 is an abundant number, because the sum of its proper divisors (33283442964) is greater than itself. Its abundance is 20373935124

Bases of 12909507840

• Binary: 1100000001011101110111010100000000₂
• Hexadecimal: 0x301777500
• Base-36: 5XHZK00

Squares and roots of 12909507840

• 12909507840 squared (12909507840²) is 166655392671021465600
• 12909507840 cubed (12909507840³) is 2151439098264830150971490304000
• The square root of 12909507840 is 113620.0151381789
• The cube root of 12909507840 is 2345.8661497015

Scales and comparisons

• 12,909,507,840 seconds is equal to 410 years, 25 weeks, 14 hours, 24 minutes.
• To count from 1 to 12,909,507,840 would take you about eight hundred twenty 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 12909507840 cubic inches would be around 195.5 feet tall.

Recreational maths with 12909507840

• 12909507840 backwards is 04870590921
• 12909507840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12909507840's digits is 45
• More coming soon!