21308195664

Names of 21308195664

• Cardinal: 21308195664 can be written as Twenty-one billion, three hundred eight million, one hundred ninety-five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1308195664 × 10¹⁰

Factors of 21308195664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 111859

Divisors of 21308195664

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 81 84 98 108 112 126 144 147 162 168 189 196 216 243 252 294 324 336 378 392 432 441 486 504 567 588 648 756 784 882 972 1008 1134 1176 1296 1323 1512 1701 1764 1944 2268 2352 2646 3024 3402 3528 3888 3969 4536 5292 6804 7056 7938 9072 10584 11907 13608 15876 21168 23814 27216 31752 47628 63504 95256 111847 190512 223694 335541 447388 671082 782929 894776 1006623 1342164 1565858 1789552 2013246 2348787 2684328 3019869 3131716 4026492 4697574 5368656 5480503 6039738 6263432 7046361 8052984 9059607 9395148 10961006 12079476 12526864 14092722 16105968 16441509 18119214 18790296 21139083 21922012 24158952 27178821 28185444 32883018 36238428 37580592 42278166 43844024 48317904 49324527 54357642 56370888 63417249 65766036 72476856 84556332 87688048 98649054 108715284 112741776 126834498 131532072 144953712 147973581 169112664 190251747 197298108 217430568 253668996 263064144 295947162 338225328 380503494 394596216 434861136 443920743 507337992 591894324 761006988 789192432 887841486 1014675984 1183788648 1331762229 1522013976 1775682972 2367577296 2663524458 3044027952 3551365944 5327048916 7102731888 10654097832 21308195664
• Sum of all divisors σ(n): 71939291424
• Sum of proper divisors (its aliquot sum) s(n): 50631095760
• 21308195664 is an abundant number, because the sum of its proper divisors (50631095760) is greater than itself. Its abundance is 29322900096

Bases of 21308195664

• Binary: 10011110110000100010100001101010000₂
• Hexadecimal: 0x4F6114350
• Base-36: 9SECL00

Squares and roots of 21308195664

• 21308195664 squared (21308195664²) is 454039202455308400896
• 21308195664 cubed (21308195664³) is 9674756165044220621754920914944
• The square root of 21308195664 is 145973.2703750929
• The cube root of 21308195664 is 2772.3553263517

Scales and comparisons

• 21,308,195,664 seconds is equal to 677 years, 27 weeks, 5 days, 15 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,308,195,664 would take you about one thousand, three hundred fifty-five 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 21308195664 cubic inches would be around 231 feet tall.

Recreational maths with 21308195664

• 21308195664 backwards is 46659180312
• The number of decimal digits it has is: 11
• The sum of 21308195664's digits is 45
• More coming soon!