21488009972

Names of 21488009972

• Cardinal: 21488009972 can be written as Twenty-one billion, four hundred eighty-eight million, nine thousand, nine hundred seventy-two.

Scientific notation

• Scientific notation: 2.1488009972 × 10¹⁰

Factors of 21488009972

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 154

Divisors of 21488009972

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 11 13 22 26 31 44 52 62 97 124 143 169 194 286 338 341 388 403 572 676 682 806 961 1067 1261 1364 1612 1859 1922 2134 2522 3007 3718 3844 4268 4433 5044 5239 6014 7436 8866 10478 10571 12028 12493 13871 16393 17732 20956 21142 24986 27742 29791 32786 33077 39091 42284 49972 55484 57629 59582 65572 66154 78182 93217 115258 119164 132308 137423 156364 162409 180323 186434 230516 274846 324818 327701 360646 372868 387283 430001 508183 549692 649636 655402 721292 774566 860002 1016366 1025387 1211821 1310804 1549132 1720004 1786499 2032732 2050774 2423642 2889727 3572998 4101548 4260113 4847284 5034679 5590013 5779454 7145996 8520226 10069358 11180026 11558908 13330031 15753673 17040452 20138716 22360052 26660062 31507346 31786997 37566451 53320124 55381469 63014692 63573994 75132902 110762938 127147988 150265804 173290403 221525876 346580806 413230961 488363863 693161612 826461922 976727726 1652923844 1953455452 5372002493 10744004986 21488009972
• Sum of all divisors σ(n): 46374741504
• Sum of proper divisors (its aliquot sum) s(n): 24886731532
• 21488009972 is an abundant number, because the sum of its proper divisors (24886731532) is greater than itself. Its abundance is 3398721560

Bases of 21488009972

• Binary: 10100000000110010010000001011110100₂
• Hexadecimal: 0x500C902F4
• Base-36: 9VDEMLW

Squares and roots of 21488009972

• 21488009972 squared (21488009972²) is 461734572556771440784
• 21488009972 cubed (21488009972³) is 9921757099517062255691399498048
• The square root of 21488009972 is 146587.8916281969
• The cube root of 21488009972 is 2780.1318870197

Scales and comparisons

• 21,488,009,972 seconds is equal to 683 years, 13 weeks, 19 hours, 39 minutes, 32 seconds.
• To count from 1 to 21,488,009,972 would take you about one thousand, three hundred sixty-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 21488009972 cubic inches would be around 231.7 feet tall.

Recreational maths with 21488009972

• 21488009972 backwards is 27990088412
• The number of decimal digits it has is: 11
• The sum of 21488009972's digits is 50
• More coming soon!