21991967424

Names of 21991967424

• Cardinal: 21991967424 can be written as Twenty-one billion, nine hundred ninety-one million, nine hundred sixty-seven thousand, four hundred twenty-four.

Scientific notation

• Scientific notation: 2.1991967424 × 10¹⁰

Factors of 21991967424

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 529

Divisors of 21991967424

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 31 32 36 42 48 54 56 62 63 64 72 84 93 96 108 112 124 126 144 168 186 189 192 216 217 223 224 248 252 263 279 288 336 372 378 432 434 446 448 496 504 526 558 576 651 669 672 744 756 789 837 864 868 892 992 1008 1052 1116 1302 1338 1344 1488 1512 1561 1578 1674 1728 1736 1784 1841 1953 1984 2007 2016 2104 2232 2367 2604 2676 2976 3024 3122 3156 3348 3472 3568 3682 3906 4014 4032 4208 4464 4683 4734 5208 5352 5523 5859 5952 6021 6048 6244 6312 6696 6913 6944 7101 7136 7364 7812 8028 8153 8416 8928 9366 9468 10416 10704 11046 11718 12042 12096 12488 12624 13392 13826 13888 14049 14202 14272 14728 15624 16056 16306 16569 16832 17856 18732 18936 20739 20832 21408 22092 23436 24084 24459 24976 25248 26784 27652 28098 28404 29456 31248 32112 32612 33138 37464 37872 41478 41664 42147 42816 44184 46872 48168 48391 48918 49707 49952 50496 53568 55304 56196 56808 57071 58649 58912 62217 62496 64224 65224 66276 73377 74928 75744 82956 84294 88368 93744 96336 96782 97836 99414 99904 110608 112392 113616 114142 117298 117824 124434 124992 128448 130448 132552 145173 146754 149856 151488 165912 168588 171213 175947 176736 186651 187488 192672 193564 195672 198828 220131 221216 224784 227232 228284 234596 248868 260896 265104 290346 293508 299712 331824 337176 342426 351894 353472 373302 374976 385344 387128 391344 397656 410543 435519 440262 442432 449568 454464 456568 469192 497736 513639 521792 527841 530208 580692 587016 663648 674352 684852 703788 746604 774256 782688 795312 821086 871038 880524 899136 913136 938384 995472 1027278 1055682 1060416 1161384 1174032 1231629 1306557 1327296 1348704 1369704 1407576 1493208 1540917 1548512 1565376 1583523 1590624 1642172 1742076 1761048 1818119 1826272 1876768 1990944 2054556 2111364 2322768 2348064 2463258 2613114 2697408 2739408 2815152 2986416 3081834 3097024 3167046 3181248 3284344 3484152 3522096 3636238 3652544 3694887 3753536 3981888 4109112 4222728 4645536 4696128 4926516 5226228 5454357 5478816 5630304 5972832 6163668 6334092 6568688 6968304 7044192 7272476 7389774 8218224 8445456 9291072 9853032 10452456 10908714 10957632 11084661 11260608 11945664 12327336 12668184 12726833 13137376 13936608 14088384 14544952 14779548 16363071 16436448 16890912 19706064 20904912 21817428 22169322 24654672 25336368 25453666 26274752 27873216 29089904 29559096 32726142 32872896 33781824 38180499 39412128 41809824 43634856 44338644 49089213 49309344 50672736 50907332 58179808 59118192 65452284 76360998 78824256 83619648 87269712 88677288 98178426 98618688 101345472 101814664 114541497 116359616 118236384 130904568 152721996 174539424 177354576 196356852 203629328 229082994 236472768 261809136 305443992 343624491 349078848 354709152 392713704 407258656 458165988 523618272 610887984 687248982 709418304 785427408 814517312 916331976 1047236544 1221775968 1374497964 1570854816 1832663952 2443551936 2748995928 3141709632 3665327904 5497991856 7330655808 10995983712 21991967424
• Sum of all divisors σ(n): 76905185280
• Sum of proper divisors (its aliquot sum) s(n): 54913217856
• 21991967424 is an abundant number, because the sum of its proper divisors (54913217856) is greater than itself. Its abundance is 32921250432

Bases of 21991967424

• Binary: 10100011110110100101100101011000000₂
• Hexadecimal: 0x51ED2CAC0
• Base-36: A3PG6O0

Squares and roots of 21991967424

• 21991967424 squared (21991967424²) is 483646631178277195776
• 21991967424 cubed (21991967424³) is 10636340957600014825947862401024
• The square root of 21991967424 is 148296.8894616471
• The cube root of 21991967424 is 2801.6982649927

Scales and comparisons

• 21,991,967,424 seconds is equal to 699 years, 14 weeks, 2 days, 15 hours, 50 minutes, 24 seconds.
• To count from 1 to 21,991,967,424 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 21991967424 cubic inches would be around 233.5 feet tall.

Recreational maths with 21991967424

• 21991967424 backwards is 42476919912
• 21991967424 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21991967424's digits is 54
• More coming soon!