28117678428

Names of 28117678428

• Cardinal: 28117678428 can be written as Twenty-eight billion, one hundred seventeen million, six hundred seventy-eight thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8117678428 × 10¹⁰

Factors of 28117678428

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 918

Divisors of 28117678428

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 17 18 19 21 28 34 36 38 42 49 51 57 61 63 68 76 84 98 102 114 119 122 126 133 147 153 171 183 196 204 228 238 244 252 266 294 306 323 342 357 366 399 427 441 476 532 549 588 612 646 684 714 732 798 809 833 854 882 931 969 1037 1071 1098 1159 1197 1281 1292 1428 1596 1618 1666 1708 1764 1862 1938 2074 2142 2196 2261 2318 2394 2427 2499 2562 2793 2907 2989 3111 3236 3332 3477 3724 3843 3876 4148 4284 4522 4636 4788 4854 4998 5124 5586 5663 5814 5978 6222 6783 6954 7259 7281 7497 7686 8113 8379 8967 9044 9333 9708 9996 10431 11172 11326 11628 11956 12444 13566 13753 13908 14518 14562 14994 15371 15372 15827 16226 16758 16989 17934 18666 19703 20349 20862 21777 22652 24339 26901 27132 27506 29036 29124 29988 30742 31654 32452 33516 33978 35868 37332 39406 39641 40698 41259 41724 43554 46113 47481 48678 49349 50813 50967 53802 55012 56791 59109 61484 63308 65331 67956 73017 78812 79282 81396 82518 87108 92226 94962 96271 97356 98698 101626 101934 107597 107604 113582 118218 118923 123777 130662 137921 138339 142443 146034 148047 152439 158564 165036 170373 177327 184452 189924 192542 197396 203252 203868 215194 227164 236436 237846 247554 261307 261324 275842 276678 284886 288813 292068 296094 304878 322791 340746 345443 354654 356769 385084 413763 430388 444141 457317 475692 495108 511119 522614 551684 553356 569772 577626 592188 609756 645582 673897 681492 690886 709308 713538 753179 783921 827526 838933 866439 888282 914634 937631 965447 968373 1022238 1036329 1045228 1155252 1241289 1291164 1347794 1381772 1427076 1506358 1567842 1655052 1677866 1732878 1776564 1829149 1829268 1875262 1930894 1936746 2021691 2044476 2072658 2259537 2351763 2418101 2482578 2516799 2695588 2812893 2896341 3012716 3108987 3135684 3355732 3465756 3658298 3750524 3861788 3873492 4043382 4145316 4519074 4703526 4836202 4965156 5033598 5487447 5625786 5792682 5872531 6065073 6217974 6563417 6778611 7254303 7316596 7550397 8086764 8438679 8689023 9038148 9407052 9672404 10067196 10974894 11251572 11585364 11745062 12130146 12435948 12804043 13126834 13557222 14508606 15100794 15939727 16462341 16877358 17378046 17617593 19690251 21762909 21949788 23490124 24260292 25608086 26253668 27114444 29017212 30201588 31879454 32924682 33754716 34756092 35235186 38412129 39380502 41107717 43525818 45943919 47819181 51216172 52852779 59070753 63758908 65849364 70470372 76824258 78761004 82215434 87051636 91887838 95638362 105705558 111578089 115236387 118141506 123323151 137831757 143457543 153648516 164430868 183775676 191276724 211411116 223156178 230472774 236283012 246646302 275663514 286915086 334734267 369969453 413495271 446312356 460945548 493292604 551327028 573830172 669468534 739938906 781046623 826990542 1004202801 1338937068 1479877812 1562093246 1653981084 2008405602 2343139869 3124186492 4016811204 4686279738 7029419607 9372559476 14058839214 28117678428
• Sum of all divisors σ(n): 93776810400
• Sum of proper divisors (its aliquot sum) s(n): 65659131972
• 28117678428 is an abundant number, because the sum of its proper divisors (65659131972) is greater than itself. Its abundance is 37541453544

Bases of 28117678428

• Binary: 11010001011111100011011100101011100₂
• Hexadecimal: 0x68BF1B95C
• Base-36: CX0JFJ0

Squares and roots of 28117678428

• 28117678428 squared (28117678428²) is 790603840180416551184
• 28117678428 cubed (28117678428³) is 22229944542134858089280514658752
• The square root of 28117678428 is 167683.2681814139
• The cube root of 28117678428 is 3040.8370858191

Scales and comparisons

• 28,117,678,428 seconds is equal to 894 years, 2 weeks, 6 days, 2 hours, 13 minutes, 48 seconds.
• To count from 1 to 28,117,678,428 would take you about one thousand, seven hundred eighty-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 28117678428 cubic inches would be around 253.4 feet tall.

Recreational maths with 28117678428

• 28117678428 backwards is 82487671182
• The number of decimal digits it has is: 11
• The sum of 28117678428's digits is 54
• More coming soon!