28081327680

Names of 28081327680

• Cardinal: 28081327680 can be written as Twenty-eight billion, eighty-one million, three hundred twenty-seven thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.808132768 × 10¹⁰

Factors of 28081327680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 179

Divisors of 28081327680

• Number of divisors d(n): 840
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 31 32 35 36 40 42 45 48 49 56 60 62 63 64 70 72 80 84 90 93 96 98 105 112 120 124 126 131 140 144 147 155 160 168 180 186 192 196 210 217 224 240 245 248 252 262 279 280 288 294 310 315 320 336 343 360 372 392 393 420 434 441 448 465 480 490 496 504 524 558 560 576 588 620 630 651 655 672 686 720 735 744 784 786 840 868 882 917 930 960 980 992 1008 1029 1048 1085 1116 1120 1176 1179 1240 1260 1302 1310 1344 1372 1395 1440 1470 1488 1519 1568 1572 1680 1715 1736 1764 1834 1860 1953 1960 1965 1984 2016 2058 2096 2170 2205 2232 2240 2352 2358 2401 2480 2520 2604 2620 2744 2751 2790 2880 2940 2976 3038 3087 3136 3144 3255 3360 3430 3472 3528 3668 3720 3906 3920 3930 4032 4061 4116 4192 4340 4410 4464 4557 4585 4704 4716 4802 4960 5040 5145 5208 5240 5488 5502 5580 5880 5895 5952 6076 6174 6288 6419 6510 6720 6860 6944 7056 7203 7336 7440 7595 7812 7840 7860 8122 8232 8253 8384 8680 8820 8928 9114 9170 9408 9432 9604 9765 9920 10080 10290 10416 10480 10633 10976 11004 11160 11760 11790 12005 12152 12183 12348 12576 12838 13020 13671 13720 13755 13888 14112 14406 14672 14880 15190 15435 15624 15680 15720 16244 16464 16506 17360 17640 17856 18228 18340 18864 19208 19257 19530 20160 20305 20580 20832 20960 21266 21609 21952 22008 22320 22785 23520 23580 24010 24304 24366 24696 25152 25676 26040 27342 27440 27510 28224 28427 28812 29344 29760 30380 30870 31248 31440 31899 32095 32488 32928 33012 34720 35280 36015 36456 36549 36680 37728 38416 38514 39060 40610 41160 41265 41664 41920 42532 43218 44016 44640 44933 45570 47040 47160 48020 48608 48732 49392 51352 52080 53165 54684 54880 55020 56854 57624 57771 58688 60760 60915 61740 62496 62880 63798 64190 64976 65856 66024 68355 69440 70560 72030 72912 73098 73360 74431 75456 76832 77028 78120 81220 82320 82530 85064 85281 86436 88032 89280 89866 91140 94320 95697 96040 96285 97216 97464 98784 102704 104160 106330 108045 109368 109760 110040 113708 115248 115542 121520 121830 123480 124992 125760 127596 128380 129952 132048 134799 136710 141120 142135 144060 145824 146196 146720 148862 153664 154056 156240 159495 162440 164640 165060 170128 170562 172872 176064 179732 182280 182745 188640 191394 192080 192570 194928 197568 198989 205408 208320 212660 216090 218736 220080 223293 224665 227416 230496 231084 243040 243660 246960 255192 255843 256760 259904 264096 269598 273420 284270 288120 288855 291648 292392 293440 297724 308112 312480 314531 318990 324880 329280 330120 340256 341124 345744 359464 364560 365490 372155 377280 382788 384160 385140 389856 397978 404397 410816 425320 426405 432180 437472 440160 446586 449330 454832 460992 462168 478485 486080 487320 493920 510384 511686 513520 528192 539196 546840 568540 576240 577710 584784 595448 596967 616224 624960 629062 637980 649760 660240 669879 673995 680512 682248 691488 718928 729120 730980 744310 765576 768320 770280 779712 795956 808794 850640 852810 864360 874944 880320 893172 898660 909664 924336 943593 956970 974640 987840 994945 1020768 1023372 1027040 1078392 1093680 1116465 1137080 1152480 1155420 1169568 1190896 1193934 1232448 1258124 1275960 1279215 1299520 1320480 1339758 1347990 1364496 1382976 1392923 1437856 1458240 1461960 1488620 1531152 1540560 1572655 1591912 1617588 1701280 1705620 1728720 1786344 1790901 1797320 1819328 1848672 1887186 1913940 1949280 1989890 2021985 2041536 2046744 2054080 2156784 2187360 2232930 2274160 2304960 2310840 2339136 2381792 2387868 2516248 2551920 2558430 2640960 2679516 2695980 2728992 2785846 2830779 2875712 2923920 2977240 2984835 3062304 3081120 3145310 3183824 3235176 3349395 3402560 3411240 3457440 3572688 3581802 3594640 3697344 3774372 3827880 3898560 3979780 4043970 4093488 4178769 4313568 4374720 4465860 4548320 4621680 4717965 4763584 4775736 5032496 5103840 5116860 5359032 5391960 5457984 5571692 5661558 5847840 5954480 5969670 6124608 6162240 6290620 6367648 6470352 6698790 6822480 6914880 6964615 7145376 7163604 7189280 7548744 7655760 7959560 8087940 8186976 8357538 8627136 8931720 8954505 9096640 9243360 9435930 9551472 9750461 10064992 10207680 10233720 10718064 10783920 11143384 11323116 11695680 11908960 11939340 12536307 12581240 12735296 12940704 13397580 13644960 13929230 14153895 14290752 14327208 14378560 15097488 15311520 15919120 16175880 16373952 16715076 17863440 17909010 18486720 18871860 19102944 19500922 20129984 20467440 20893845 21436128 21567840 22286768 22646232 23817920 23878680 25072614 25162480 25881408 26795160 27289920 27858460 28307790 28654416 29251383 30194976 30623040 31838240 32351760 33430152 35726880 35818020 37743720 38205888 39001844 40934880 41787690 42872256 43135680 44573536 45292464 47757360 48752305 50145228 50324960 53590320 55716920 56615580 57308832 58502766 60389952 62681535 63676480 64703520 66860304 71453760 71636040 75487440 78003688 81869760 83575380 87754149 89147072 90584928 95514720 97504610 100290456 100649920 107180640 111433840 113231160 114617664 117005532 125363070 129407040 133720608 143272080 146256915 150974880 156007376 167150760 175508298 181169856 191029440 195009220 200580912 214361280 222867680 226462320 234011064 250726140 267441216 286544160 292513830 301949760 312014752 334301520 351016596 390018440 401161824 438770745 445735360 452924640 468022128 501452280 573088320 585027660 624029504 668603040 702033192 780036880 802323648 877541490 905849280 936044256 1002904560 1170055320 1337206080 1404066384 1560073760 1755082980 1872088512 2005809120 2340110640 2808132768 3120147520 3510165960 4011618240 4680221280 5616265536 7020331920 9360442560 14040663840 28081327680
• Sum of all divisors σ(n): 117202086144
• Sum of proper divisors (its aliquot sum) s(n): 89120758464
• 28081327680 is an abundant number, because the sum of its proper divisors (89120758464) is greater than itself. Its abundance is 61039430784

Bases of 28081327680

• Binary: 11010001001110001110000111001000000₂
• Hexadecimal: 0x689C70E40
• Base-36: CWEWB40

Squares and roots of 28081327680

• 28081327680 squared (28081327680²) is 788560964271534182400
• 28081327680 cubed (28081327680³) is 22143838833365723872295288832000
• The square root of 28081327680 is 167574.8420258841
• The cube root of 28081327680 is 3039.5261149605

Scales and comparisons

• 28,081,327,680 seconds is equal to 892 years, 46 weeks, 5 days, 8 hours, 48 minutes.
• To count from 1 to 28,081,327,680 would take you about one thousand, seven hundred eighty-five 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 28081327680 cubic inches would be around 253.3 feet tall.

Recreational maths with 28081327680

• 28081327680 backwards is 08672318082
• 28081327680 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28081327680's digits is 45
• More coming soon!