12805827840

Names of 12805827840

• Cardinal: 12805827840 can be written as Twelve billion, eight hundred five million, eight hundred twenty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.280582784 × 10¹⁰

Factors of 12805827840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 3190

Divisors of 12805827840

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 32 36 39 40 45 48 52 54 60 64 65 72 78 80 81 90 96 104 108 117 120 128 130 135 144 156 160 162 180 192 195 208 216 234 240 243 256 260 270 288 312 320 324 351 360 384 390 405 416 432 468 480 486 520 540 576 585 624 640 648 702 720 768 780 810 832 864 936 960 972 1040 1053 1080 1152 1170 1215 1248 1280 1296 1404 1440 1560 1620 1664 1728 1755 1872 1920 1944 2080 2106 2160 2304 2340 2430 2496 2592 2808 2880 3120 3159 3167 3240 3328 3456 3510 3744 3840 3888 4160 4212 4320 4680 4860 4992 5184 5265 5616 5760 6240 6318 6334 6480 6912 7020 7488 7776 8320 8424 8640 9360 9501 9720 9984 10368 10530 11232 11520 12480 12636 12668 12960 14040 14976 15552 15795 15835 16640 16848 17280 18720 19002 19440 20736 21060 22464 24960 25272 25336 25920 28080 28503 29952 31104 31590 31670 33696 34560 37440 38004 38880 41171 42120 44928 47505 49920 50544 50672 51840 56160 57006 62208 63180 63340 67392 74880 76008 77760 82342 84240 85509 89856 95010 101088 101344 103680 112320 114012 123513 126360 126680 134784 142515 149760 152016 155520 164684 168480 171018 190020 202176 202688 205855 224640 228024 247026 252720 253360 256527 269568 285030 304032 311040 329368 336960 342036 370539 380040 404352 405376 411710 427545 449280 456048 494052 505440 506720 513054 570060 608064 617565 658736 673920 684072 741078 760080 769581 808704 810752 823420 855090 912096 988104 1010880 1013440 1026108 1111617 1140120 1216128 1235130 1282635 1317472 1347840 1368144 1482156 1520160 1539162 1646840 1710180 1824192 1852695 1976208 2021760 2026880 2052216 2223234 2280240 2432256 2470260 2565270 2634944 2736288 2964312 3040320 3078324 3293680 3334851 3420360 3648384 3705390 3847905 3952416 4043520 4053760 4104432 4446468 4560480 4940520 5130540 5269888 5472576 5558085 5928624 6080640 6156648 6587360 6669702 6840720 7296768 7410780 7695810 7904832 8208864 8892936 9120960 9881040 10004553 10261080 10539776 10945152 11116170 11857248 12161280 12313296 13174720 13339404 13681440 14821560 15391620 15809664 16417728 16674255 17785872 18241920 19762080 20009106 20522160 21890304 22232340 23714496 24626592 26349440 26678808 27362880 29643120 30783240 31619328 32835456 33348510 35571744 36483840 39524160 40018212 41044320 44464680 47428992 49253184 50022765 52698880 53357616 54725760 59286240 61566480 65670912 66697020 71143488 79048320 80036424 82088640 88929360 94857984 98506368 100045530 106715232 109451520 118572480 123132960 133394040 142286976 158096640 160072848 164177280 177858720 197012736 200091060 213430464 237144960 246265920 266788080 284573952 320145696 328354560 355717440 400182120 426860928 474289920 492531840 533576160 640291392 711434880 800364240 853721856 985063680 1067152320 1280582784 1422869760 1600728480 2134304640 2561165568 3201456960 4268609280 6402913920 12805827840
• Sum of all divisors σ(n): 49497896448
• Sum of proper divisors (its aliquot sum) s(n): 36692068608
• 12805827840 is an abundant number, because the sum of its proper divisors (36692068608) is greater than itself. Its abundance is 23886240768

Bases of 12805827840

• Binary: 1011111011010010010110110100000000₂
• Hexadecimal: 0x2FB496D00
• Base-36: 5VS9C00

Squares and roots of 12805827840

• 12805827840 squared (12805827840²) is 163989226667719065600
• 12805827840 cubed (12805827840³) is 2100017804321547239559266304000
• The square root of 12805827840 is 113162.8377162751
• The cube root of 12805827840 is 2339.5691514449

Scales and comparisons

• 12,805,827,840 seconds is equal to 407 years, 9 weeks, 4 days, 14 hours, 24 minutes.
• To count from 1 to 12,805,827,840 would take you about eight hundred fourteen 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 12805827840 cubic inches would be around 195 feet tall.

Recreational maths with 12805827840

• 12805827840 backwards is 04872850821
• 12805827840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12805827840's digits is 45
• More coming soon!