28218939840

Names of 28218939840

• Cardinal: 28218939840 can be written as Twenty-eight billion, two hundred eighteen million, nine hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.821893984 × 10¹⁰

Factors of 28218939840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1938

Divisors of 28218939840

• Number of divisors d(n): 896
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 19 20 21 24 26 27 28 30 32 35 36 38 39 40 42 45 48 52 54 56 57 60 63 64 65 70 72 76 78 80 84 90 91 95 96 104 105 108 112 114 117 120 126 130 133 135 140 144 152 156 160 168 171 180 182 189 190 192 195 208 210 216 224 228 234 240 247 252 260 266 270 273 280 285 288 304 312 315 320 336 342 351 360 364 378 380 390 399 416 420 432 448 455 456 468 480 494 504 513 520 532 540 546 560 570 576 585 608 624 630 665 672 684 702 720 728 741 756 760 780 798 819 832 840 855 864 910 912 936 945 960 988 1008 1026 1040 1064 1080 1092 1120 1140 1170 1197 1216 1235 1248 1260 1330 1344 1365 1368 1404 1440 1456 1482 1512 1520 1560 1596 1638 1680 1710 1728 1729 1755 1820 1824 1872 1889 1890 1976 1995 2016 2052 2080 2128 2160 2184 2223 2240 2280 2340 2394 2457 2470 2496 2520 2565 2660 2730 2736 2808 2880 2912 2964 3024 3040 3120 3192 3276 3360 3420 3458 3510 3591 3640 3648 3705 3744 3778 3780 3952 3990 4032 4095 4104 4160 4256 4320 4368 4446 4560 4680 4788 4914 4940 5040 5130 5187 5320 5460 5472 5616 5667 5824 5928 5985 6048 6080 6240 6384 6552 6669 6720 6840 6916 7020 7182 7280 7410 7488 7556 7560 7904 7980 8190 8208 8512 8640 8645 8736 8892 9120 9360 9445 9576 9828 9880 10080 10260 10374 10640 10920 10944 11115 11232 11334 11856 11970 12096 12285 12480 12768 13104 13223 13338 13680 13832 14040 14364 14560 14820 15112 15120 15561 15808 15960 16380 16416 17001 17290 17472 17784 17955 18240 18720 18890 19152 19656 19760 20160 20520 20748 21280 21840 22230 22464 22668 23712 23940 24557 24570 25536 25935 26208 26446 26676 27360 27664 28080 28335 28728 29120 29640 30224 30240 31122 31920 32760 32832 33345 34002 34580 35568 35891 35910 37440 37780 38304 39312 39520 39669 41040 41496 42560 43680 44460 45336 46683 47424 47880 49114 49140 51003 51870 52416 52892 53352 54720 55328 56160 56670 57456 59280 60448 60480 62244 63840 65520 66115 66690 68004 69160 71136 71782 71820 73671 75560 76608 77805 78624 79040 79338 82080 82992 85005 87360 88920 90672 93366 95760 98228 98280 102006 103740 105784 106704 107673 110656 112320 113340 114912 118560 119007 120896 122785 124488 127680 131040 132230 133380 136008 138320 142272 143564 143640 147342 151120 155610 157248 158676 164160 165984 170010 171899 177840 179455 181344 186732 191520 196456 196560 198345 204012 207480 211568 213408 215346 221013 226680 229824 233415 237120 238014 245570 248976 251237 255015 262080 264460 266760 272016 276640 287128 287280 294684 302240 311220 317352 323019 331968 340020 343798 355680 357021 358910 362688 368355 373464 383040 392912 393120 396690 408024 414960 423136 426816 430692 442026 453360 466583 466830 476028 491140 497952 502474 510030 515697 528920 533520 538365 544032 553280 574256 574560 589368 595035 604480 622440 634704 646038 663039 680040 687596 711360 714042 717820 736710 746928 753711 785824 786240 793380 816048 829920 846272 859495 861384 884052 906720 933166 933660 952056 969057 982280 995904 1004948 1020060 1031394 1057840 1067040 1076730 1088064 1105065 1148512 1149120 1178736 1190070 1244880 1256185 1269408 1292076 1326078 1360080 1375192 1399749 1428084 1435640 1473420 1493856 1507422 1547091 1571648 1586760 1615095 1632096 1659840 1718990 1722768 1768104 1785105 1813440 1866332 1867320 1904112 1938114 1964560 2009896 2040120 2062788 2115680 2134080 2153460 2210130 2261133 2297024 2332915 2357472 2380140 2489760 2512370 2538816 2578485 2584152 2652156 2720160 2750384 2799498 2856168 2871280 2946840 2987712 3014844 3094182 3173520 3230190 3264192 3266081 3315195 3437980 3445536 3536208 3570210 3732664 3734640 3768555 3808224 3876228 3929120 4019792 4080240 4125576 4199247 4231360 4306920 4420260 4522266 4641273 4665830 4714944 4760280 4845285 4979520 5024740 5156970 5168304 5304312 5440320 5500768 5598996 5712336 5742560 5893680 6029688 6188364 6347040 6460380 6532162 6630390 6783399 6875960 6891072 6998745 7072416 7140420 7465328 7469280 7537110 7616448 7735455 7752456 7858240 8039584 8160480 8251152 8398494 8613840 8840520 9044532 9282546 9331660 9520560 9690570 9798243 10049480 10313940 10336608 10608624 11001536 11197992 11305665 11424672 11485120 11787360 12059376 12376728 12597741 12694080 12920760 13064324 13260780 13566798 13751920 13997490 14144832 14280840 14930656 14938560 15074220 15470910 15504912 16079168 16320960 16330405 16502304 16796988 17227680 17681040 18089064 18565092 18663320 19041120 19381140 19596486 20098960 20627880 20673216 20996235 21217248 22395984 22611330 22849344 23206365 23574720 24118752 24753456 25195482 25841520 26128648 26521560 27133596 27503840 27994980 28561680 29394729 29861312 30148440 30941820 31009824 32660810 33004608 33593976 33916995 34455360 35362080 36178128 37130184 37326640 38082240 38762280 39192972 40197920 41255760 41992470 42434496 44791968 45222660 46412730 48237504 48991215 49506912 50390964 51683040 52257296 53043120 54267192 55007680 55989960 57123360 58789458 60296880 61883640 62019648 62988705 65321620 67187952 67833990 70724160 72356256 74260368 74653280 77524560 78385944 80395840 82511520 83984940 88184187 89583936 90445320 92825460 97982430 99013824 100781928 103366080 104514592 106086240 108534384 111979920 114246720 117578916 120593760 123767280 125977410 130643240 134375904 135667980 144712512 146973645 148520736 149306560 155049120 156771888 165023040 167969880 176368374 180890640 185650920 195964860 201563856 209029184 212172480 217068768 223959840 235157832 241187520 247534560 251954820 261286480 268751808 271335960 293947290 297041472 310098240 313543776 335939760 352736748 361781280 371301840 391929720 403127712 434137536 440920935 447919680 470315664 495069120 503909640 522572960 542671920 587894580 627087552 671879520 705473496 723562560 742603680 783859440 806255424 881841870 940631328 1007819280 1045145920 1085343840 1175789160 1343759040 1410946992 1485207360 1567718880 1763683740 1881262656 2015638560 2170687680 2351578320 2821893984 3135437760 3527367480 4031277120 4703156640 5643787968 7054734960 9406313280 14109469920 28218939840
• Sum of all divisors σ(n): 129040128000
• Sum of proper divisors (its aliquot sum) s(n): 100821188160
• 28218939840 is an abundant number, because the sum of its proper divisors (100821188160) is greater than itself. Its abundance is 72602248320

Bases of 28218939840

• Binary: 11010010001111110101101100111000000₂
• Hexadecimal: 0x691FAD9C0
• Base-36: CYOTTC0

Squares and roots of 28218939840

• 28218939840 squared (28218939840²) is 796308565693539225600
• 28218939840 cubed (28218939840³) is 22470983509382671283886587904000
• The square root of 28218939840 is 167984.9393249287
• The cube root of 28218939840 is 3044.4830785505

Scales and comparisons

• 28,218,939,840 seconds is equal to 897 years, 14 weeks, 2 days, 2 hours, 24 minutes.
• To count from 1 to 28,218,939,840 would take you about one thousand, seven hundred ninety-four 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 28218939840 cubic inches would be around 253.7 feet tall.

Recreational maths with 28218939840

• 28218939840 backwards is 04893981282
• 28218939840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28218939840's digits is 54
• More coming soon!