21664387008

Names of 21664387008

• Cardinal: 21664387008 can be written as Twenty-one billion, six hundred sixty-four million, three hundred eighty-seven thousand and eight.

Scientific notation

• Scientific notation: 2.1664387008 × 10¹⁰

Factors of 21664387008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 14087

Divisors of 21664387008

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 81 88 96 99 108 132 144 162 176 192 198 216 243 264 288 297 324 352 396 432 486 528 576 594 648 704 729 792 864 891 972 1056 1188 1296 1458 1584 1728 1782 1944 2112 2187 2376 2592 2673 2916 3168 3564 3888 4374 4752 5184 5346 5832 6336 7128 7776 8019 8748 9504 10692 11664 14071 14256 15552 16038 17496 19008 21384 23328 24057 28142 28512 32076 34992 42213 42768 46656 48114 56284 57024 64152 69984 84426 85536 96228 112568 126639 128304 139968 154781 168852 171072 192456 225136 253278 256608 309562 337704 379917 384912 450272 464343 506556 513216 619124 675408 759834 769824 900544 928686 1013112 1139751 1238248 1350816 1393029 1519668 1539648 1857372 2026224 2279502 2476496 2701632 2786058 3039336 3419253 3714744 4052448 4179087 4559004 4952992 5572116 6078672 6838506 7429488 8104896 8358174 9118008 9905984 10257759 11144232 12157344 12537261 13677012 14858976 16716348 18236016 20515518 22288464 24314688 25074522 27354024 29717952 30773277 33432696 36472032 37611783 41031036 44576928 50149044 54708048 61546554 66865392 72944064 75223566 82062072 89153856 100298088 109416096 112835349 123093108 133730784 150447132 164124144 200596176 218832192 225670698 246186216 267461568 300894264 328248288 338506047 401192352 451341396 492372432 601788528 656496576 677012094 802384704 902682792 984744864 1203577056 1354024188 1805365584 1969489728 2407154112 2708048376 3610731168 5416096752 7221462336 10832193504 21664387008
• Sum of all divisors σ(n): 70341987840
• Sum of proper divisors (its aliquot sum) s(n): 48677600832
• 21664387008 is an abundant number, because the sum of its proper divisors (48677600832) is greater than itself. Its abundance is 27013213824

Bases of 21664387008

• Binary: 10100001011010011000100111111000000₂
• Hexadecimal: 0x50B4C4FC0
• Base-36: 9YAF000

Squares and roots of 21664387008

• 21664387008 squared (21664387008²) is 469345664432399192064
• 21664387008 cubed (21664387008³) is 10168086114790396750821018304512
• The square root of 21664387008 is 147188.2706196387
• The cube root of 21664387008 is 2787.7177590089

Scales and comparisons

• 21,664,387,008 seconds is equal to 688 years, 44 weeks, 5 days, 5 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,664,387,008 would take you about one thousand, three hundred seventy-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 21664387008 cubic inches would be around 232.3 feet tall.

Recreational maths with 21664387008

• 21664387008 backwards is 80078346612
• The number of decimal digits it has is: 11
• The sum of 21664387008's digits is 45
• More coming soon!