21358902474

Names of 21358902474

• Cardinal: 21358902474 can be written as Twenty-one billion, three hundred fifty-eight million, nine hundred two thousand, four hundred seventy-four.

Scientific notation

• Scientific notation: 2.1358902474 × 10¹⁰

Factors of 21358902474

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 633

Divisors of 21358902474

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 27 31 39 42 54 62 63 78 81 91 93 117 126 162 182 186 189 217 234 243 273 279 351 378 403 434 486 546 558 567 577 651 702 729 806 819 837 1053 1134 1154 1209 1302 1458 1638 1674 1701 1731 1953 2106 2187 2418 2457 2511 2821 3159 3402 3462 3627 3906 4039 4374 4914 5022 5103 5193 5642 5859 6318 6561 7254 7371 7501 7533 8078 8463 9477 10206 10386 10881 11718 12117 13122 14742 15002 15066 15309 15579 16926 17577 17887 18954 21762 22113 22503 22599 24234 25389 28431 30618 31158 32643 35154 35774 36351 44226 45006 45198 45927 46737 50778 52507 52731 53661 56862 65286 66339 67509 67797 72702 76167 85293 91854 93474 97929 105014 105462 107322 109053 125209 132678 135018 135594 140211 152334 157521 158193 160983 170586 195858 199017 202527 203391 218106 228501 232531 250418 280422 293787 315042 316386 321966 327159 375627 398034 405054 406782 420633 457002 465062 472563 474579 482949 587574 597051 607581 654318 685503 697593 751254 841266 881361 945126 949158 965898 981477 1126881 1194102 1215162 1261899 1371006 1395186 1417689 1423737 1448847 1627717 1762722 1822743 1962954 2056509 2092779 2253762 2523798 2644083 2835378 2847474 2897694 2944431 3255434 3380643 3645486 3785697 4113018 4185558 4253067 4346541 4883151 5288166 5468229 5888862 6169527 6278337 6761286 7571394 8506134 8693082 8833293 9766302 10141929 10936458 12339054 12556674 12759201 13039623 14649453 16404687 17666586 18508581 18835011 20283858 25518402 26079246 26499879 29298906 30425787 32809374 37017162 37670022 38277603 39118869 43948359 49214061 52999758 56505033 60851574 76555206 78237738 87896718 91277361 98428122 113010066 114832809 117356607 131845077 169515099 182554722 229665618 234713214 263690154 273832083 339030198 344498427 395535231 508545297 547664166 688996854 791070462 821496249 1017090594 1186605693 1525635891 1642992498 2373211386 3051271782 3559817079 7119634158 10679451237 21358902474
• Sum of all divisors σ(n): 61158429696
• Sum of proper divisors (its aliquot sum) s(n): 39799527222
• 21358902474 is an abundant number, because the sum of its proper divisors (39799527222) is greater than itself. Its abundance is 18440624748

Bases of 21358902474

• Binary: 10011111001000101101111110011001010₂
• Hexadecimal: 0x4F916FCCA
• Base-36: 9T8JEMI

Squares and roots of 21358902474

• 21358902474 squared (21358902474²) is 456202714893843320676
• 21358902474 cubed (21358902474³) is 9743989295791626749354991752424
• The square root of 21358902474 is 146146.8524259075
• The cube root of 21358902474 is 2774.5526957623

Scales and comparisons

• 21,358,902,474 seconds is equal to 679 years, 7 weeks, 4 days, 12 hours, 27 minutes, 54 seconds.
• To count from 1 to 21,358,902,474 would take you about one thousand, three hundred fifty-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 21358902474 cubic inches would be around 231.2 feet tall.

Recreational maths with 21358902474

• 21358902474 backwards is 47420985312
• The number of decimal digits it has is: 11
• The sum of 21358902474's digits is 45
• More coming soon!