21008812500

Names of 21008812500

• Cardinal: 21008812500 can be written as Twenty-one billion, eight million, eight hundred twelve thousand, five hundred.

Scientific notation

• Scientific notation: 2.10088125 × 10¹⁰

Factors of 21008812500

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 40

Divisors of 21008812500

• Number of divisors d(n): 504
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 17 18 20 25 26 30 34 36 39 45 50 51 52 60 65 68 75 78 85 90 100 102 117 125 130 150 153 156 169 170 180 195 204 221 225 234 250 255 260 300 306 325 338 340 375 390 425 442 450 468 500 507 510 585 612 625 650 663 676 750 765 780 845 850 884 900 975 1014 1020 1105 1125 1170 1250 1275 1300 1326 1500 1521 1530 1625 1690 1700 1875 1950 1989 2028 2125 2197 2210 2250 2340 2500 2535 2550 2652 2873 2925 3042 3060 3125 3250 3315 3380 3750 3825 3900 3978 4225 4250 4394 4420 4500 4875 5070 5100 5525 5625 5746 5850 6084 6250 6375 6500 6591 6630 7500 7605 7650 7956 8125 8450 8500 8619 8788 9375 9750 9945 10140 10625 10985 11050 11250 11492 11700 12500 12675 12750 13182 13260 14365 14625 15210 15300 15625 16250 16575 16900 17238 18750 19125 19500 19773 19890 21125 21250 21970 22100 22500 24375 25350 25500 25857 26364 27625 28125 28730 29250 30420 31250 31875 32500 32955 33150 34476 37349 37500 38025 38250 39546 39780 40625 42250 42500 43095 43940 46875 48750 49725 50700 51714 53125 54925 55250 56250 57460 58500 62500 63375 63750 65910 66300 71825 73125 74698 76050 76500 79092 81250 82875 84500 86190 93750 95625 97500 98865 99450 103428 105625 106250 109850 110500 112047 112500 121875 126750 127500 129285 131820 138125 140625 143650 146250 149396 152100 159375 162500 164775 165750 172380 186745 187500 190125 191250 197730 198900 203125 211250 212500 215475 219700 224094 243750 248625 253500 258570 265625 274625 276250 281250 287300 292500 316875 318750 329550 331500 336141 359125 365625 373490 380250 382500 395460 406250 414375 422500 430950 448188 478125 487500 494325 497250 517140 528125 531250 549250 552500 560235 562500 609375 633750 637500 646425 659100 672282 690625 718250 731250 746980 760500 796875 812500 823875 828750 861900 933725 950625 956250 988650 994500 1056250 1062500 1077375 1098500 1120470 1218750 1243125 1267500 1292850 1344564 1373125 1381250 1436500 1462500 1584375 1593750 1647750 1657500 1680705 1795625 1828125 1867450 1901250 1912500 1977300 2071875 2112500 2154750 2240940 2390625 2437500 2471625 2486250 2585700 2640625 2746250 2762500 2801175 3168750 3187500 3232125 3295500 3361410 3453125 3591250 3656250 3734900 3802500 4119375 4143750 4309500 4668625 4753125 4781250 4943250 4972500 5281250 5386875 5492500 5602350 6215625 6337500 6464250 6722820 6865625 6906250 7182500 7312500 7921875 8238750 8287500 8403525 8978125 9337250 9506250 9562500 9886500 10359375 10562500 10773750 11204700 12358125 12431250 12928500 13731250 13812500 14005875 15843750 16160625 16477500 16807050 17956250 18674500 19012500 20596875 20718750 21547500 23343125 23765625 24716250 24862500 26934375 27462500 28011750 31078125 31687500 32321250 33614100 34328125 35912500 41193750 41437500 42017625 44890625 46686250 47531250 49432500 53868750 56023500 61790625 62156250 64642500 68656250 70029375 80803125 82387500 84035250 89781250 93372500 95062500 102984375 107737500 116715625 123581250 124312500 134671875 137312500 140058750 161606250 168070500 179562500 205968750 210088125 233431250 247162500 269343750 280117500 308953125 323212500 350146875 404015625 411937500 420176250 466862500 538687500 583578125 617906250 700293750 808031250 840352500 1050440625 1167156250 1235812500 1400587500 1616062500 1750734375 2100881250 2334312500 3501468750 4201762500 5252203125 7002937500 10504406250 21008812500
• Sum of all divisors σ(n): 76140431640
• Sum of proper divisors (its aliquot sum) s(n): 55131619140
• 21008812500 is an abundant number, because the sum of its proper divisors (55131619140) is greater than itself. Its abundance is 34122806640

Bases of 21008812500

• Binary: 10011100100001110010000100111010100₂
• Hexadecimal: 0x4E43909D4
• Base-36: 9NG3RH0

Squares and roots of 21008812500

• 21008812500 squared (21008812500²) is 441370202660156250000
• 21008812500 cubed (21008812500³) is 9272663830774223876953125000000
• The square root of 21008812500 is 144944.1702863555
• The cube root of 21008812500 is 2759.3100433521

Scales and comparisons

• 21,008,812,500 seconds is equal to 668 years, 5 days, 13 hours, 15 minutes.
• To count from 1 to 21,008,812,500 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 21008812500 cubic inches would be around 229.9 feet tall.

Recreational maths with 21008812500

• 21008812500 backwards is 00521880012
• The number of decimal digits it has is: 11
• The sum of 21008812500's digits is 27
• More coming soon!