81823006720

Names of 81823006720

• Cardinal: 81823006720 can be written as Eighty-one billion, eight hundred twenty-three million, six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 8.182300672 × 10¹⁰

Factors of 81823006720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 25
• Sum of prime factors: 27

Divisors of 81823006720

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 49 52 56 64 65 70 80 91 98 104 112 128 130 140 160 182 196 208 224 245 256 260 280 320 343 364 392 416 448 455 490 512 520 560 637 640 686 728 784 832 896 910 980 1024 1040 1120 1274 1280 1372 1456 1568 1664 1715 1792 1820 1960 2048 2080 2240 2401 2548 2560 2744 2912 3136 3185 3328 3430 3584 3640 3920 4096 4160 4459 4480 4802 5096 5120 5488 5824 6272 6370 6656 6860 7168 7280 7840 8192 8320 8918 8960 9604 10192 10240 10976 11648 12005 12544 12740 13312 13720 14336 14560 15680 16384 16640 17836 17920 19208 20384 20480 21952 22295 23296 24010 25088 25480 26624 27440 28672 29120 31213 31360 32768 33280 35672 35840 38416 40768 40960 43904 44590 46592 48020 50176 50960 53248 54880 57344 58240 62426 62720 65536 66560 71344 71680 76832 81536 81920 87808 89180 93184 96040 100352 101920 106496 109760 114688 116480 124852 125440 131072 133120 142688 143360 153664 156065 163072 163840 175616 178360 186368 192080 200704 203840 212992 219520 229376 232960 249704 250880 262144 266240 285376 286720 307328 312130 326144 327680 351232 356720 372736 384160 401408 407680 425984 439040 458752 465920 499408 501760 524288 532480 570752 573440 614656 624260 652288 655360 702464 713440 745472 768320 802816 815360 851968 878080 917504 931840 998816 1003520 1064960 1141504 1146880 1229312 1248520 1304576 1310720 1404928 1426880 1490944 1536640 1605632 1630720 1703936 1756160 1835008 1863680 1997632 2007040 2129920 2283008 2293760 2458624 2497040 2609152 2621440 2809856 2853760 2981888 3073280 3211264 3261440 3407872 3512320 3670016 3727360 3995264 4014080 4259840 4566016 4587520 4917248 4994080 5218304 5619712 5707520 5963776 6146560 6422528 6522880 6815744 7024640 7454720 7990528 8028160 8519680 9132032 9175040 9834496 9988160 10436608 11239424 11415040 11927552 12293120 12845056 13045760 14049280 14909440 15981056 16056320 17039360 18264064 18350080 19668992 19976320 20873216 22478848 22830080 23855104 24586240 25690112 26091520 28098560 29818880 31962112 32112640 34078720 36528128 39337984 39952640 41746432 44957696 45660160 47710208 49172480 52183040 56197120 59637760 63924224 64225280 73056256 78675968 79905280 83492864 89915392 91320320 98344960 104366080 112394240 119275520 127848448 128450560 146112512 157351936 159810560 166985728 179830784 182640640 196689920 208732160 224788480 238551040 255696896 292225024 314703872 319621120 333971456 365281280 393379840 417464320 449576960 511393792 584450048 629407744 639242240 730562560 786759680 834928640 899153920 1022787584 1168900096 1258815488 1278484480 1461125120 1573519360 1669857280 2045575168 2337800192 2556968960 2922250240 3147038720 4091150336 5113937920 5844500480 6294077440 8182300672 10227875840 11689000960 16364601344 20455751680 40911503360 81823006720
• Sum of all divisors σ(n): 246712920300
• Sum of proper divisors (its aliquot sum) s(n): 164889913580
• 81823006720 is an abundant number, because the sum of its proper divisors (164889913580) is greater than itself. Its abundance is 83066906860

Bases of 81823006720

• Binary: 1001100001101000010000000000000000000₂
• Hexadecimal: 0x130D080000
• Base-36: 11L7B01S

Squares and roots of 81823006720

• 81823006720 squared (81823006720²) is 6695004428701165158400
• 81823006720 cubed (81823006720³) is 547805392360045197627593064448000
• The square root of 81823006720 is 286047.2106488717
• The cube root of 81823006720 is 4341.3534453783

Scales and comparisons

• 81,823,006,720 seconds is equal to 2,601 years, 37 weeks, 2 days, 12 hours, 58 minutes, 40 seconds.
• To count from 1 to 81,823,006,720 would take you about five thousand, two hundred three 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 81823006720 cubic inches would be around 361.8 feet tall.

Recreational maths with 81823006720

• 81823006720 backwards is 02760032818
• The number of decimal digits it has is: 11
• The sum of 81823006720's digits is 37
• More coming soon!