21010987008

Names of 21010987008

• Cardinal: 21010987008 can be written as Twenty-one billion, ten million, nine hundred eighty-seven thousand and eight.

Scientific notation

• Scientific notation: 2.1010987008 × 10¹⁰

Factors of 21010987008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 34559

Divisors of 21010987008

• Number of divisors d(n): 192
• 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 88 96 99 108 128 132 144 176 192 198 216 256 264 288 297 352 384 396 432 512 528 576 594 704 768 792 864 1024 1056 1152 1188 1408 1536 1584 1728 2048 2112 2304 2376 2816 3072 3168 3456 4224 4608 4752 5632 6144 6336 6912 8448 9216 9504 11264 12672 13824 16896 18432 19008 22528 25344 27648 33792 34543 38016 50688 55296 67584 69086 76032 101376 103629 138172 152064 202752 207258 276344 304128 310887 379973 414516 552688 608256 621774 759946 829032 932661 1105376 1139919 1243548 1519892 1658064 1865322 2210752 2279838 2487096 3039784 3316128 3419757 3730644 4421504 4559676 4974192 6079568 6632256 6839514 7461288 8843008 9119352 9948384 10259271 12159136 13264512 13679028 14922576 17686016 18238704 19896768 20518542 24318272 26529024 27358056 29845152 35372032 36477408 39793536 41037084 48636544 53058048 54716112 59690304 70744064 72954816 79587072 82074168 97273088 106116096 109432224 119380608 145909632 159174144 164148336 194546176 212232192 218864448 238761216 291819264 318348288 328296672 389092352 437728896 477522432 583638528 636696576 656593344 778184704 875457792 955044864 1167277056 1313186688 1750915584 1910089728 2334554112 2626373376 3501831168 5252746752 7003662336 10505493504 21010987008
• Sum of all divisors σ(n): 67899686400
• Sum of proper divisors (its aliquot sum) s(n): 46888699392
• 21010987008 is an abundant number, because the sum of its proper divisors (46888699392) is greater than itself. Its abundance is 25877712384

Bases of 21010987008

• Binary: 10011100100010110100011100000000000₂
• Hexadecimal: 0x4E45A3800
• Base-36: 9NHEDC0

Squares and roots of 21010987008

• 21010987008 squared (21010987008²) is 441461575050344792064
• 21010987008 cubed (21010987008³) is 9275543417914011371977165504512
• The square root of 21010987008 is 144951.6712839145
• The cube root of 21010987008 is 2759.4052404631

Scales and comparisons

• 21,010,987,008 seconds is equal to 668 years, 4 weeks, 2 days, 17 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,010,987,008 would take you about one thousand, three hundred thirty-six 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 21010987008 cubic inches would be around 230 feet tall.

Recreational maths with 21010987008

• 21010987008 backwards is 80078901012
• 21010987008 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21010987008's digits is 36
• More coming soon!