28389447840

Names of 28389447840

• Cardinal: 28389447840 can be written as Twenty-eight billion, three hundred eighty-nine million, four hundred forty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.838944784 × 10¹⁰

Factors of 28389447840

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 257

Divisors of 28389447840

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 17 20 24 26 30 31 32 34 39 40 48 51 52 60 62 65 68 78 80 85 89 93 96 97 102 104 120 124 130 136 155 156 160 170 178 186 194 195 204 208 221 240 248 255 260 267 272 291 310 312 340 356 372 388 390 403 408 416 442 445 465 480 485 496 510 520 527 534 544 582 620 624 663 680 712 744 776 780 806 816 884 890 930 970 992 1020 1040 1054 1068 1105 1157 1164 1209 1240 1248 1261 1326 1335 1360 1424 1455 1488 1513 1552 1560 1581 1612 1632 1649 1768 1780 1860 1940 2015 2040 2080 2108 2136 2210 2314 2328 2418 2480 2522 2635 2652 2670 2720 2759 2848 2910 2976 3007 3026 3104 3120 3162 3224 3298 3315 3471 3536 3560 3720 3783 3880 4030 4080 4216 4272 4420 4539 4628 4656 4836 4947 4960 5044 5270 5304 5340 5518 5785 5820 6014 6045 6052 6240 6305 6324 6448 6596 6630 6851 6942 7072 7120 7440 7565 7566 7760 7905 8060 8160 8245 8277 8432 8544 8633 8840 9021 9078 9256 9312 9672 9894 10088 10540 10608 10680 11036 11570 11640 12028 12090 12104 12610 12648 12896 13192 13260 13702 13795 13884 14240 14880 15035 15130 15132 15520 15810 16120 16490 16554 16864 17266 17355 17680 18042 18156 18512 18915 19344 19669 19788 20176 20553 21080 21216 21360 21437 22072 22695 23140 23280 24056 24180 24208 24735 25220 25296 25899 26384 26520 27404 27590 27768 30070 30260 30264 31620 32240 32980 33108 34255 34532 34710 35360 35867 36084 36312 37024 37830 38688 39091 39338 39576 40352 41106 41385 42160 42720 42874 43165 44144 45105 45390 46280 46560 46903 48112 48360 48416 49470 50440 50592 51119 51798 52768 53040 54808 55180 55536 59007 60140 60520 60528 63240 64311 64480 65960 66216 68510 69064 69420 71734 72168 72624 75660 78182 78676 79152 82212 82770 84320 85748 86330 88288 90210 90780 92560 93806 96224 96720 98345 98940 100880 102238 102765 103596 106080 107185 107601 109616 110360 111072 112229 117273 118014 120280 121040 121056 126480 128622 129495 131920 132432 137020 138128 138840 140709 143468 144336 145248 146761 151320 153357 156364 157352 158304 164424 165540 171496 172660 179335 180420 181560 185120 187612 193440 195455 196690 197880 201760 204476 205530 207192 214370 215202 219232 220720 224458 234515 234546 236028 240560 242080 252960 255595 257244 258990 263840 264864 267623 274040 276256 277680 281418 286936 288672 293522 295035 302640 306714 312728 314704 321555 328848 331080 336687 342992 345320 358670 360840 363120 375224 390910 393380 395760 408952 411060 414384 428740 430404 440283 441440 448916 469030 469092 472056 481120 511190 514488 517980 535246 538005 548080 555360 561145 562836 573872 586365 587044 590070 605280 609739 613428 625456 629408 643110 657696 662160 664547 673374 685984 690640 703545 717340 721680 726240 733805 750448 766785 781820 786760 791520 802869 817904 822120 828768 857480 860808 880566 897832 938060 938184 944112 1022380 1028976 1035960 1070492 1076010 1096160 1122290 1125672 1147744 1172730 1174088 1180140 1219478 1226856 1250912 1286220 1324320 1329094 1338115 1346748 1381280 1407090 1434680 1443360 1467610 1500896 1533570 1563640 1573520 1605738 1635808 1644240 1683435 1714960 1721616 1761132 1795664 1829217 1876120 1876368 1888224 1907893 1993641 2044760 2057952 2071920 2140984 2152020 2201415 2244580 2251344 2345460 2348176 2360280 2438956 2453712 2572440 2658188 2676230 2693496 2814180 2869360 2935220 3048695 3067140 3127280 3147040 3211476 3288480 3322735 3366870 3429920 3443232 3479099 3522264 3591328 3658434 3752240 3752736 3815786 3987282 4014345 4089520 4143840 4281968 4304040 4402830 4489160 4502688 4549591 4690920 4696352 4720560 4877912 4907424 5144880 5316376 5352460 5386992 5628360 5723679 5738720 5870440 6097390 6134280 6254560 6422952 6645470 6733740 6958198 7044528 7316868 7504480 7631572 7974564 8028690 8179040 8563936 8608080 8805660 8978320 9099182 9146085 9381840 9441120 9539465 9755824 9968205 10289760 10437297 10632752 10704920 10773984 11256720 11447358 11740880 12194780 12268560 12845904 13290940 13467480 13648773 13916396 14089056 14633736 15263144 15949128 16057380 17216160 17395495 17611320 17956640 18198364 18292170 18763680 19078930 19511648 19936410 20874594 21265504 21409840 22513440 22747955 22894716 23481760 24389560 24537120 25691808 26581880 26934960 27297546 27832792 28618395 29267472 30526288 31898256 32114760 34790990 35222640 36396728 36584340 38157860 39872820 41749188 42819680 45495910 45789432 48779120 52186485 53163760 53869920 54595092 55665584 57236790 58534944 59144683 61052576 63796512 64229520 68243865 69581980 70445280 72793456 73168680 76315720 79745640 83498376 90991820 91578864 97558240 104372970 106327520 109190184 111331168 114473580 118289366 128459040 136487730 139163960 145586912 146337360 152631440 159491280 166996752 177434049 181983640 183157728 208745940 218380368 228947160 236578732 272975460 278327920 292674720 295723415 305262880 318982560 333993504 354868098 363967280 417491880 436760736 457894320 473157464 545950920 556655840 591446830 709736196 727934560 834983760 887170245 915788640 946314928 1091901840 1182893660 1419472392 1669967520 1774340490 1892629856 2183803680 2365787320 2838944784 3548680980 4731574640 5677889568 7097361960 9463149280 14194723920 28389447840
• Sum of all divisors σ(n): 107540213760
• Sum of proper divisors (its aliquot sum) s(n): 79150765920
• 28389447840 is an abundant number, because the sum of its proper divisors (79150765920) is greater than itself. Its abundance is 50761318080

Bases of 28389447840

• Binary: 11010011100001001001001100010100000₂
• Hexadecimal: 0x69C2498A0
• Base-36: D1ICE5C

Squares and roots of 28389447840

• 28389447840 squared (28389447840²) is 805960748660080665600
• 28389447840 cubed (28389447840³) is 22880780635172709946243682304000
• The square root of 28389447840 is 168491.6847799915
• The cube root of 28389447840 is 3050.6026880301

Scales and comparisons

• 28,389,447,840 seconds is equal to 902 years, 36 weeks, 1 day, 13 hours, 44 minutes.
• To count from 1 to 28,389,447,840 would take you about one thousand, eight hundred 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 28389447840 cubic inches would be around 254.2 feet tall.

Recreational maths with 28389447840

• 28389447840 backwards is 04874498382
• The number of decimal digits it has is: 11
• The sum of 28389447840's digits is 57
• More coming soon!