28405808640

Names of 28405808640

• Cardinal: 28405808640 can be written as Twenty-eight billion, four hundred five million, eight hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.840580864 × 10¹⁰

Factors of 28405808640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 404

Divisors of 28405808640

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 17 18 19 20 22 24 30 32 33 34 36 38 40 44 45 48 51 55 57 60 64 66 68 72 76 80 85 88 90 95 96 99 102 110 114 120 128 132 136 144 152 153 160 165 170 171 176 180 187 190 192 198 204 209 220 228 240 255 256 264 272 285 288 304 306 320 323 330 340 342 347 352 360 374 380 384 396 408 418 440 456 480 495 510 512 528 544 561 570 576 608 612 627 640 646 660 680 684 694 704 720 748 760 765 768 792 816 836 855 880 912 935 960 969 990 1020 1041 1045 1056 1088 1122 1140 1152 1216 1224 1254 1280 1292 1320 1360 1368 1388 1408 1440 1496 1520 1530 1536 1584 1615 1632 1672 1683 1710 1735 1760 1824 1870 1881 1920 1938 1980 2040 2082 2090 2112 2176 2244 2280 2304 2432 2448 2508 2560 2584 2640 2720 2736 2776 2805 2816 2880 2907 2992 3040 3060 3123 3135 3168 3230 3264 3344 3366 3420 3470 3520 3553 3648 3740 3762 3817 3840 3876 3960 4080 4164 4180 4224 4352 4488 4560 4608 4845 4864 4896 5016 5168 5205 5280 5440 5472 5552 5610 5632 5760 5814 5899 5984 6080 6120 6246 6270 6336 6460 6528 6593 6688 6732 6840 6940 7040 7106 7296 7480 7524 7634 7680 7752 7920 8160 8328 8360 8415 8448 8704 8976 9120 9405 9690 9728 9792 10032 10336 10410 10560 10659 10880 10944 11104 11220 11451 11520 11628 11798 11968 12160 12240 12492 12540 12672 12920 13056 13186 13376 13464 13680 13880 14080 14212 14535 14592 14960 15048 15268 15504 15615 15840 16320 16656 16720 16830 16896 17697 17765 17952 18240 18810 19085 19380 19584 19779 20064 20672 20820 21120 21318 21760 21888 22208 22440 22902 23040 23256 23596 23936 24320 24480 24984 25080 25344 25840 26112 26372 26752 26928 27360 27760 28160 28424 29070 29184 29495 29920 30096 30536 31008 31230 31680 31977 32640 32965 33312 33440 33660 34353 35394 35530 35904 36480 37620 38170 38760 39168 39558 40128 41344 41640 42240 42636 43520 43776 44416 44880 45804 46512 47192 47872 48640 48960 49968 50160 50688 51680 52744 53091 53295 53504 53856 54720 55520 56848 57255 58140 58990 59337 59840 60192 61072 62016 62460 63360 63954 64889 65280 65930 66624 66880 67320 68706 70788 71060 71808 72523 72960 75240 76340 77520 78336 79116 80256 82688 83280 84480 85272 87552 88485 88832 89760 91608 93024 94384 95744 97920 98895 99936 100320 103360 105488 106182 106590 107008 107712 109440 111040 112081 113696 114510 116280 117980 118674 119680 120384 122144 124032 124920 126720 127908 129778 130560 131860 133248 133760 134640 137412 141576 142120 143616 145046 145920 150480 152680 155040 158232 159885 160512 165376 166560 170544 171765 176970 177664 179520 183216 186048 188768 194667 195840 197790 199872 200640 206720 210976 212364 213180 215424 217569 218880 222080 224162 227392 229020 232560 235960 237348 239360 240768 244288 248064 249840 253440 255816 259556 263720 265455 266496 267520 269280 274824 283152 284240 287232 290092 296685 300960 305360 310080 316464 319770 321024 324445 333120 336243 341088 343530 353940 359040 362615 366432 372096 377536 389334 391680 395580 399744 401280 413440 421952 424728 426360 430848 435138 437760 444160 448324 454784 458040 465120 471920 474696 478720 481536 488576 496128 499680 511632 519112 527440 530910 532992 535040 538560 549648 560405 566304 568480 580184 584001 593370 601920 610720 620160 632928 639540 648890 652707 666240 672486 682176 687060 707880 718080 725230 732864 744192 755072 778668 791160 799488 802560 826880 843904 849456 852720 861696 870276 888320 896648 909568 916080 930240 943840 949392 963072 973335 977152 999360 1008729 1023264 1038224 1054880 1061820 1077120 1087845 1099296 1120810 1132608 1136960 1160368 1168002 1186740 1203840 1221440 1232891 1240320 1265856 1279080 1297780 1305414 1332480 1344972 1364352 1374120 1415760 1436160 1450460 1465728 1488384 1510144 1557336 1582320 1598976 1605120 1681215 1687808 1698912 1705440 1740552 1793296 1819136 1832160 1860480 1887680 1898784 1946670 1954304 1998720 2017458 2046528 2076448 2109760 2123640 2154240 2175690 2198592 2241620 2265216 2273920 2320736 2336004 2373480 2407680 2442880 2465782 2480640 2531712 2558160 2595560 2610828 2664960 2689944 2728704 2748240 2831520 2900920 2920005 2931456 3020288 3114672 3164640 3263535 3362430 3375616 3397824 3410880 3481104 3586592 3664320 3698673 3720960 3775360 3797568 3893340 3997440 4034916 4093056 4152896 4219520 4247280 4308480 4351380 4397184 4483240 4530432 4547840 4641472 4672008 4746960 4815360 4885760 4931564 5043645 5063424 5116320 5191120 5221656 5379888 5457408 5496480 5663040 5801840 5840010 5862912 6164455 6229344 6329280 6527070 6724860 6795648 6821760 6962208 7173184 7328640 7397346 7441920 7550720 7595136 7786680 7994880 8069832 8186112 8305792 8439040 8494560 8702760 8794368 8966480 9060864 9095680 9282944 9344016 9493920 9771520 9863128 10087290 10126848 10232640 10382240 10443312 10759776 10992960 11096019 11326080 11603680 11680020 12328910 12458688 12658560 13054140 13449720 13591296 13643520 13924416 14346368 14657280 14794692 15101440 15190272 15573360 16139664 16372224 16611584 16878080 16989120 17405520 17588736 17932960 18493365 18565888 18688032 18987840 19726256 20174580 20465280 20764480 20886624 21519552 21985920 22192038 22652160 23207360 23360040 24657820 24917376 25317120 26108280 26899440 27182592 27287040 27848832 28692736 29314560 29589384 30380544 31146720 32279328 33223168 33978240 34811040 35865920 36986730 37131776 37376064 37975680 39452512 40349160 40930560 41528960 41773248 43039104 43971840 44384076 45304320 46414720 46720080 49315640 49834752 50634240 52216560 53798880 55480095 55697664 57385472 59178768 62293440 64558656 67956480 69622080 71731840 73973460 74752128 75951360 78905024 80698320 81861120 83057920 83546496 86078208 87943680 88768152 92829440 93440160 98631280 99669504 104433120 107597760 110960190 111395328 118357536 124586880 129117312 135912960 139244160 143463680 147946920 149504256 151902720 157810048 161396640 166115840 167092992 172156416 177536304 185658880 186880320 197262560 208866240 215195520 221920380 236715072 249173760 258234624 278488320 286927360 295893840 299008512 315620096 322793280 334185984 355072608 373760640 394525120 417732480 430391040 443840760 473430144 498347520 516469248 556976640 591787680 631240192 645586560 710145216 747521280 789050240 835464960 860782080 887681520 946860288 1183575360 1291173120 1420290432 1495042560 1578100480 1670929920 1775363040 1893720576 2367150720 2582346240 2840580864 3156200960 3550726080 4734301440 5681161728 7101452160 9468602880 14202904320 28405808640
• Sum of all divisors σ(n): 119959107840
• Sum of proper divisors (its aliquot sum) s(n): 91553299200
• 28405808640 is an abundant number, because the sum of its proper divisors (91553299200) is greater than itself. Its abundance is 63147490560

Bases of 28405808640

• Binary: 11010011101000111100011111000000000₂
• Hexadecimal: 0x69D1E3E00
• Base-36: D1S3280

Squares and roots of 28405808640

• 28405808640 squared (28405808640²) is 806889964492298649600
• 28405808640 cubed (28405808640³) is 22920361924904630194268012544000
• The square root of 28405808640 is 168540.2285509309
• The cube root of 28405808640 is 3051.1885948791

Scales and comparisons

• 28,405,808,640 seconds is equal to 903 years, 11 weeks, 1 day, 22 hours, 24 minutes.
• To count from 1 to 28,405,808,640 would take you about one thousand, eight hundred 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 28405808640 cubic inches would be around 254.3 feet tall.

Recreational maths with 28405808640

• 28405808640 backwards is 04680850482
• 28405808640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28405808640's digits is 45
• More coming soon!