21998982291

Names of 21998982291

• Cardinal: 21998982291 can be written as Twenty-one billion, nine hundred ninety-eight million, nine hundred eighty-two thousand, two hundred ninety-one.

Scientific notation

• Scientific notation: 2.1998982291 × 10¹⁰

Factors of 21998982291

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 272

Divisors of 21998982291

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 11 13 33 39 47 71 121 127 141 143 213 363 381 429 517 611 781 923 1331 1397 1551 1573 1651 1833 2343 2769 3337 3993 4191 4719 4953 5687 5969 6721 8591 9017 10011 10153 15367 17061 17303 17907 18161 20163 25773 27051 30459 36707 43381 46101 51909 54483 62557 65659 73931 77597 94501 99187 110121 111683 117221 130143 169037 187671 196977 199771 221793 232791 283503 297561 335049 351663 403777 423799 477191 507111 599313 722249 813241 853567 1091057 1211331 1228513 1271397 1289431 1431573 2166747 2197481 2439723 2560701 3273171 3685539 3868293 4441547 4661789 5249101 5509387 6592443 7944739 9389237 12001627 13324641 13985367 14183741 15747303 16528161 23834217 28167711 36004881 42551223 51279679 57740111 60603257 103281607 153839037 156021151 173220333 181809771 309844821 468063453 564076469 666635827 1692229407 1999907481 7332994097 21998982291
• Sum of all divisors σ(n): 36267098112
• Sum of proper divisors (its aliquot sum) s(n): 14268115821
• 21998982291 is a deficient number, because the sum of its proper divisors (14268115821) is less than itself. Its deficiency is 7730866470

Bases of 21998982291

• Binary: 10100011111001111011101010010010011₂
• Hexadecimal: 0x51F3DD493
• Base-36: A3TMJDF

Squares and roots of 21998982291

• 21998982291 squared (21998982291²) is 483955221839731608681
• 21998982291 cubed (21998982291³) is 10646522354889232099566260868171
• The square root of 21998982291 is 148320.5390058977
• The cube root of 21998982291 is 2801.9961230097

Scales and comparisons

• 21,998,982,291 seconds is equal to 699 years, 25 weeks, 6 days, 20 hours, 24 minutes, 51 seconds.
• To count from 1 to 21,998,982,291 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 21998982291 cubic inches would be around 233.5 feet tall.

Recreational maths with 21998982291

• 21998982291 backwards is 19228989912
• The number of decimal digits it has is: 11
• The sum of 21998982291's digits is 60
• More coming soon!