20428378649388

Names of 20428378649388

• Cardinal: 20428378649388 can be written as Twenty trillion, four hundred twenty-eight billion, three hundred seventy-eight million, six hundred forty-nine thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 2.0428378649388 × 10¹³

Factors of 20428378649388

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 8040

Divisors of 20428378649388

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 9 12 18 19 27 36 38 54 57 76 81 108 114 149 162 171 228 298 324 342 361 447 513 596 684 722 894 1026 1083 1341 1444 1539 1788 2052 2166 2682 2831 3078 3249 4023 4332 5364 5662 6156 6498 7867 8046 8493 9747 11324 12069 12996 15734 16092 16986 19494 22201 23601 24138 25479 29241 31468 33972 38988 44402 47202 48276 50958 53789 58482 66603 70803 76437 88804 94404 101916 107578 116964 133206 141606 149473 152874 161367 199809 212409 215156 229311 266412 283212 298946 305748 322734 399618 421819 424818 448419 458622 484101 597892 599427 637227 645468 799236 843638 849636 896838 917244 968202 1172183 1198854 1265457 1274454 1345257 1452303 1687276 1793676 1798281 1936404 2344366 2397708 2530914 2548908 2690514 2839987 2904606 3516549 3596562 3796371 4035771 4356909 4688732 5061828 5381028 5679974 5809212 7033098 7193124 7592742 8014561 8071542 8519961 8713818 10549647 11359948 11389113 12107313 14066196 15185484 16029122 16143084 17039922 17427636 21099294 22271477 22778226 24043683 24214626 25559883 31648941 32058244 34079844 34167339 42198588 44542954 45556452 48087366 48429252 51119766 63297882 66814431 68334678 72131049 76679649 89085908 94946823 96174732 102239532 126595764 133628862 136669356 144262098 153359298 174655267 189893646 200443293 216393147 230038947 267257724 288524196 306718596 349310534 379787292 400886586 423158063 432786294 460077894 523965801 601329879 649179441 698621068 801773172 846316126 865572588 920155788 1047931602 1202659758 1269474189 1298358882 1571897403 1692632252 1803989637 2095863204 2405319516 2538948378 2596717764 3143794806 3318450073 3607979274 3808422567 4715692209 5077896756 6287589612 6636900146 7215958548 7616845134 9431384418 9955350219 11425267701 13273800292 14147076627 15233690268 18862768836 19910700438 22850535402 28294153254 29866050657 34275803103 39821400876 45701070804 56588306508 59732101314 63050551387 68551606206 89598151971 119464202628 126101102774 137103212412 179196303942 189151654161 252202205548 268794455913 358392607884 378303308322 537588911826 567454962483 756606616644 1075177823652 1134909924966 1702364887449 2269819849932 3404729774898 5107094662347 6809459549796 10214189324694 20428378649388
• Sum of all divisors σ(n): 56750500467276
• Sum of proper divisors (its aliquot sum) s(n): 36322121817888
• 20428378649388 is an abundant number, because the sum of its proper divisors (36322121817888) is greater than itself. Its abundance is 15893743168500

Bases of 20428378649388

• Binary: 100101001010001011010010000001011001100101100₂
• Hexadecimal: 0x12945A40B32C
• Base-36: 78OO17AR0

Squares and roots of 20428378649388

• 20428378649388 squared (20428378649388²) is 417318654242771487032774544
• 20428378649388 cubed (20428378649388³) is 8525143486324365946132507194849027579072
• The square root of 20428378649388 is 4519776.3937376371
• The cube root of 20428378649388 is 27336.6084966559

Scales and comparisons

• 20,428,378,649,388 seconds is equal to 649,559 years, 13 weeks, 16 hours, 49 minutes, 48 seconds.
• To count from 1 to 20,428,378,649,388 would take you about one million, six hundred twenty-three thousand, eight hundred ninety-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 20428378649388 cubic inches would be around 2278.1 feet tall.

Recreational maths with 20428378649388

• 20428378649388 backwards is 88394687382402
• The number of decimal digits it has is: 14
• The sum of 20428378649388's digits is 72
• More coming soon!