21348124728

Names of 21348124728

• Cardinal: 21348124728 can be written as Twenty-one billion, three hundred forty-eight million, one hundred twenty-four thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1348124728 × 10¹⁰

Factors of 21348124728

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 391

Divisors of 21348124728

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 19 21 23 24 28 29 37 38 42 46 56 57 58 69 74 76 84 87 92 111 114 116 133 138 148 152 161 168 174 184 203 222 228 232 259 266 271 276 296 322 348 399 406 437 444 456 483 518 532 542 551 552 609 644 667 696 703 777 798 812 813 851 874 888 966 1036 1064 1073 1084 1102 1218 1288 1311 1334 1406 1554 1596 1624 1626 1653 1702 1748 1897 1932 2001 2072 2109 2146 2168 2204 2436 2553 2622 2668 2812 3059 3108 3192 3219 3252 3306 3404 3496 3794 3857 3864 4002 4218 4292 4408 4669 4872 4921 5106 5149 5244 5336 5624 5691 5957 6118 6216 6233 6438 6504 6612 6808 7511 7588 7714 7859 8004 8436 8584 9177 9338 9842 10027 10212 10298 10488 11382 11571 11914 12236 12466 12673 12876 13224 14007 14763 15022 15176 15428 15447 15718 16008 16169 16872 17871 18354 18676 18699 19684 20054 20387 20424 20596 22533 22764 23142 23577 23828 24472 24679 24932 25346 25752 28014 29526 30044 30081 30856 30894 31436 32338 35742 36043 36708 37352 37398 38019 39368 40108 40774 41192 43631 45066 45528 46284 47154 47656 48507 49358 49864 50692 55013 56028 59052 60088 60162 61161 61788 62872 64676 70189 71484 72086 73416 74037 74796 76038 80216 81548 87262 88711 90132 92568 94308 97014 98716 101384 108129 110026 112056 113183 118104 118427 120324 122322 123576 129352 130893 140378 142709 142968 144172 148074 149321 149592 152076 163096 165039 172753 174524 177422 180264 180757 188616 190513 194028 197432 210567 216258 220052 226366 230621 236854 240648 244644 261786 266133 280756 285418 288344 290783 296148 298642 304152 330078 339549 345506 349048 354844 355281 361514 381026 388056 421134 428127 432516 440104 447963 452732 461242 468901 473708 489288 518259 523572 532266 542271 561512 570836 571539 581566 592296 597284 660156 679098 691012 691863 709688 710562 723028 762052 828989 842268 856254 865032 872349 895926 905464 922484 937802 947416 1036518 1045247 1047144 1064532 1084542 1141672 1143078 1163132 1194568 1265299 1320312 1333591 1358196 1382024 1383726 1406703 1421124 1446056 1524104 1614347 1657978 1684536 1712508 1744698 1791852 1844968 1875604 2035481 2073036 2090494 2129064 2169084 2286156 2326264 2486967 2530598 2667182 2716392 2767452 2813406 2842248 3135741 3228694 3282307 3315956 3425016 3434383 3489396 3583704 3751208 3795897 4000773 4070962 4146072 4180988 4338168 4381799 4572312 4843041 4973934 5061196 5334364 5524877 5534904 5626812 6106443 6271482 6457388 6564614 6631912 6688009 6868766 6978792 7591794 8001546 8141924 8361976 8763598 9686082 9846921 9947868 10122392 10303149 10668728 11049754 11253624 12212886 12542964 12914776 13129228 13145397 13376018 13737532 15183588 16003092 16283848 16574631 17527196 19372164 19693842 19895736 20064027 20606298 22099508 24040681 24425772 25085928 26258456 26290794 26752036 27475064 30367176 30672593 32006184 33149262 35054392 38674139 38744328 39387684 40128054 41212596 44199016 46816063 48081362 48851544 52581588 53504072 61345186 66298524 72122043 77348278 78775368 80256108 82425192 92017779 93632126 96162724 105163176 116022417 122690372 127072171 132597048 140448189 144244086 154696556 160512216 184035558 187264252 192325448 232044834 245380744 254144342 280896378 288488172 309393112 368071116 374528504 381216513 464089668 508288684 561792756 576976344 736142232 762433026 889505197 928179336 1016577368 1123585512 1524866052 1779010394 2668515591 3049732104 3558020788 5337031182 7116041576 10674062364 21348124728
• Sum of all divisors σ(n): 71442432000
• Sum of proper divisors (its aliquot sum) s(n): 50094307272
• 21348124728 is an abundant number, because the sum of its proper divisors (50094307272) is greater than itself. Its abundance is 28746182544

Bases of 21348124728

• Binary: 10011111000011100101000100000111000₂
• Hexadecimal: 0x4F8728838
• Base-36: 9T24EGO

Squares and roots of 21348124728

• 21348124728 squared (21348124728²) is 455742429402245073984
• 21348124728 cubed (21348124728³) is 9729246226720862322634019876352
• The square root of 21348124728 is 146109.9747724295
• The cube root of 21348124728 is 2774.0859355837

Scales and comparisons

• 21,348,124,728 seconds is equal to 678 years, 41 weeks, 5 days, 18 hours, 38 minutes, 48 seconds.
• To count from 1 to 21,348,124,728 would take you about one thousand, three hundred fifty-seven 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 21348124728 cubic inches would be around 231.2 feet tall.

Recreational maths with 21348124728

• 21348124728 backwards is 82742184312
• 21348124728 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21348124728's digits is 42
• More coming soon!