28915393920

Names of 28915393920

• Cardinal: 28915393920 can be written as Twenty-eight billion, nine hundred fifteen million, three hundred ninety-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.891539392 × 10¹⁰

Factors of 28915393920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 123

Divisors of 28915393920

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 23 24 28 30 32 35 40 42 46 48 49 56 60 64 69 70 80 83 84 92 96 98 105 112 115 120 128 138 140 147 160 161 166 168 184 192 196 210 224 230 240 245 249 276 280 294 320 322 332 336 343 345 368 384 392 415 420 448 460 480 483 490 498 529 552 560 581 588 640 644 664 672 686 690 735 736 784 805 830 840 896 920 960 966 980 996 1029 1058 1104 1120 1127 1162 1176 1245 1288 1328 1344 1372 1380 1470 1472 1568 1587 1610 1660 1680 1715 1743 1840 1909 1920 1932 1960 1992 2058 2116 2208 2240 2254 2324 2352 2415 2490 2576 2645 2656 2688 2744 2760 2905 2940 2944 3136 3174 3220 3320 3360 3381 3430 3486 3680 3703 3818 3864 3920 3984 4067 4116 4232 4416 4480 4508 4648 4704 4830 4980 5145 5152 5290 5312 5488 5520 5635 5727 5810 5880 6272 6348 6440 6640 6720 6762 6860 6972 7360 7406 7636 7728 7840 7889 7935 7968 8134 8232 8464 8715 8832 9016 9296 9408 9545 9660 9960 10290 10304 10580 10624 10976 11040 11109 11270 11454 11620 11760 12201 12696 12880 13280 13363 13440 13524 13720 13944 14720 14812 15272 15456 15680 15778 15870 15936 16268 16464 16905 16928 17430 18032 18515 18592 18816 19090 19320 19920 20335 20580 20608 21160 21952 22080 22218 22540 22908 23240 23520 23667 24402 25392 25760 25921 26560 26726 27048 27440 27888 28469 28635 29624 30544 30912 31360 31556 31740 31872 32536 32928 33810 33856 34860 36064 37030 37184 38180 38640 39445 39840 40089 40670 41160 42320 43904 43907 44160 44436 45080 45816 46480 47040 47334 48804 50784 51520 51842 53120 53452 54096 54880 55545 55776 56938 57270 59248 61005 61088 61824 63112 63480 65072 65856 66815 67620 67712 69720 72128 74060 74368 76360 77280 77763 78890 79680 80178 81340 82320 84640 85407 87814 88872 90160 91632 92960 93541 94080 94668 97608 101568 103040 103684 106904 108192 109760 111090 111552 113876 114540 118335 118496 122010 122176 126224 126960 129605 130144 131712 131721 133630 135240 139440 142345 144256 148120 152720 154560 155526 157780 159360 160356 162680 164640 169280 170814 175628 177744 180320 181447 183264 185920 187082 189336 195216 200445 203136 207368 213808 216384 219520 219535 222180 223104 227752 229080 236670 236992 244020 244352 252448 253920 259210 260288 263442 267260 270480 278880 280623 284690 296240 305440 307349 309120 311052 315560 320712 325360 329280 338560 341628 351256 355488 360640 362894 366528 371840 374164 378672 388815 390432 400890 414736 427035 427616 432768 439070 444360 455504 458160 467705 473340 473984 488040 504896 507840 518420 520576 526884 534520 540960 544341 557760 561246 569380 592480 610880 614698 622104 631120 641424 650720 654787 658560 658605 683256 702512 710976 721280 725788 733056 748328 757344 777630 780864 801780 829472 854070 855232 878140 888720 907235 911008 916320 922047 935410 946680 976080 1009792 1015680 1036840 1053768 1069040 1081920 1088682 1115520 1122492 1138760 1184960 1221760 1229396 1244208 1262240 1282848 1301440 1309574 1317210 1366512 1403115 1405024 1421952 1451576 1496656 1514688 1536745 1555260 1561728 1603560 1658944 1708140 1710464 1756280 1777440 1814470 1822016 1832640 1844094 1870820 1893360 1952160 1964361 2073680 2107536 2138080 2151443 2163840 2177364 2244984 2277520 2369920 2458792 2488416 2524480 2565696 2602880 2619148 2634420 2721705 2733024 2806230 2810048 2903152 2993312 3029376 3073490 3110520 3207120 3273935 3317888 3416280 3512560 3554880 3628940 3644032 3665280 3688188 3741640 3786720 3904320 3928722 4147360 4215072 4276160 4302886 4354728 4489968 4555040 4610235 4917584 4976832 5048960 5131392 5238296 5268840 5443410 5466048 5612460 5620096 5806304 5986624 6146980 6221040 6414240 6454329 6547870 6832560 7025120 7109760 7257880 7376376 7483280 7573440 7808640 7857444 8294720 8430144 8552320 8605772 8709456 8979936 9110080 9220470 9821805 9835168 9953664 10476592 10537680 10757215 10886820 10932096 11224920 11612608 11973248 12293960 12442080 12828480 12908658 13095740 13665120 14050240 14515760 14752752 14966560 15060101 15146880 15714888 16589440 16860288 17211544 17418912 17959872 18220160 18440940 19643610 19670336 20953184 21075360 21514430 21773640 22449840 23225216 24587920 24884160 25656960 25817316 26191480 27330240 28100480 29031520 29505504 29933120 30120202 31429776 32271645 34423088 34837824 35919744 36881880 39287220 39340672 41906368 42150720 43028860 43547280 44899680 45180303 49175840 49768320 51634632 52382960 54660480 58063040 59011008 59866240 60240404 62859552 64543290 68846176 69675648 73763760 75300505 78574440 83812736 84301440 86057720 87094560 89799360 90360606 98351680 103269264 104765920 116126080 118022016 120480808 125719104 129086580 137692352 147527520 150601010 157148880 172115440 174189120 179598720 180721212 196703360 206538528 209531840 225901515 240961616 251438208 258173160 275384704 295055040 301202020 314297760 344230880 348378240 361442424 413077056 419063680 451803030 481923232 516346320 590110080 602404040 628595520 688461760 722884848 826154112 903606060 963846464 1032692640 1204808080 1257191040 1376923520 1445769696 1807212120 1927692928 2065385280 2409616160 2891539392 3614424240 4130770560 4819232320 5783078784 7228848480 9638464640 14457696960 28915393920
• Sum of all divisors σ(n): 113714496000
• Sum of proper divisors (its aliquot sum) s(n): 84799102080
• 28915393920 is an abundant number, because the sum of its proper divisors (84799102080) is greater than itself. Its abundance is 55883708160

Bases of 28915393920

• Binary: 11010111011011111011110010110000000₂
• Hexadecimal: 0x6BB7DE580
• Base-36: DA7H8QO

Squares and roots of 28915393920

• 28915393920 squared (28915393920²) is 836100005548772966400
• 28915393920 cubed (28915393920³) is 24176161016956956096102924288000
• The square root of 28915393920 is 170045.2702076713
• The cube root of 28915393920 is 3069.3261374349

Scales and comparisons

• 28,915,393,920 seconds is equal to 919 years, 21 weeks, 5 days, 21 hours, 52 minutes.
• To count from 1 to 28,915,393,920 would take you about one thousand, eight hundred thirty-eight 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 28915393920 cubic inches would be around 255.8 feet tall.

Recreational maths with 28915393920

• 28915393920 backwards is 02939351982
• The number of decimal digits it has is: 11
• The sum of 28915393920's digits is 51
• More coming soon!