21985169472

Names of 21985169472

• Cardinal: 21985169472 can be written as Twenty-one billion, nine hundred eighty-five million, one hundred sixty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1985169472 × 10¹⁰

Factors of 21985169472

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 769

Divisors of 21985169472

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 64 72 84 96 98 108 112 126 144 147 168 189 192 196 216 224 252 288 294 336 343 378 392 432 441 448 504 576 588 672 686 756 757 784 864 882 1008 1029 1176 1323 1344 1372 1512 1514 1568 1728 1764 2016 2058 2271 2352 2401 2646 2744 3024 3028 3087 3136 3528 4032 4116 4542 4704 4802 5292 5299 5488 6048 6056 6174 6813 7056 7203 8232 9084 9261 9408 9604 10584 10598 10976 12096 12112 12348 13626 14112 14406 15897 16464 16807 18168 18522 19208 20439 21168 21196 21609 21952 24224 24696 27252 28224 28812 31794 32928 33614 36336 37044 37093 38416 40878 42336 42392 43218 47691 48448 49392 50421 54504 57624 63588 64827 65856 67228 72672 74088 74186 76832 81756 84672 84784 86436 95382 98784 100842 109008 111279 115248 127176 129654 134456 143073 145344 148176 148372 151263 153664 163512 169568 172872 190764 197568 201684 218016 222558 230496 254352 259308 259651 268912 286146 296352 296744 302526 327024 333837 339136 345744 381528 403368 436032 445116 453789 460992 508704 518616 519302 537824 572292 592704 593488 605052 654048 667674 691488 763056 778953 806736 890232 907578 1001511 1017408 1037232 1038604 1075648 1144584 1186976 1210104 1308096 1335348 1382976 1526112 1557906 1613472 1780464 1815156 1817557 2003022 2074464 2077208 2289168 2336859 2373952 2420208 2670696 3052224 3115812 3226944 3560928 3630312 3635114 4006044 4148928 4154416 4578336 4673718 4840416 5341392 5452671 6231624 7010577 7121856 7260624 7270228 8012088 8308832 9156672 9347436 9680832 10682784 10905342 12463248 12722899 14021154 14521248 14540456 16024176 16358013 16617664 18694872 21365568 21810684 24926496 25445798 28042308 29042496 29080912 32048352 32716026 37389744 38168697 43621368 49074039 49852992 50891596 56084616 58161824 64096704 65432052 74779488 76337394 87242736 98148078 101783192 112169232 114506091 116323648 130864104 149558976 152674788 174485472 196296156 203566384 224338464 229012182 261728208 305349576 343518273 348970944 392592312 407132768 448676928 458024364 523456416 610699152 687036546 785184624 814265536 916048728 1046912832 1221398304 1374073092 1570369248 1832097456 2442796608 2748146184 3140738496 3664194912 5496292368 7328389824 10992584736 21985169472
• Sum of all divisors σ(n): 75503349120
• Sum of proper divisors (its aliquot sum) s(n): 53518179648
• 21985169472 is an abundant number, because the sum of its proper divisors (53518179648) is greater than itself. Its abundance is 31533010176

Bases of 21985169472

• Binary: 10100011110011010110001000001000000₂
• Hexadecimal: 0x51E6B1040
• Base-36: A3LEHC0

Squares and roots of 21985169472

• 21985169472 squared (21985169472²) is 483347676712560758784
• 21985169472 cubed (21985169472³) is 10626480586423116112963152642048
• The square root of 21985169472 is 148273.9676140083
• The cube root of 21985169472 is 2801.4095569581

Scales and comparisons

• 21,985,169,472 seconds is equal to 699 years, 3 weeks, 23 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,985,169,472 would take you about one thousand, three 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 21985169472 cubic inches would be around 233.5 feet tall.

Recreational maths with 21985169472

• 21985169472 backwards is 27496158912
• 21985169472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21985169472's digits is 54
• More coming soon!