21007772520

Names of 21007772520

• Cardinal: 21007772520 can be written as Twenty-one billion, seven million, seven hundred seventy-two thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.100777252 × 10¹⁰

Factors of 21007772520

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2412

Divisors of 21007772520

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 71 84 105 120 140 142 163 168 210 213 280 284 326 355 420 426 489 497 568 652 710 815 840 852 978 994 1065 1141 1304 1420 1491 1630 1704 1956 1988 2130 2161 2282 2445 2485 2840 2982 3260 3423 3912 3976 4260 4322 4564 4890 4970 5705 5964 6483 6520 6846 7455 8520 8644 9128 9780 9940 10805 11410 11573 11928 12966 13692 14910 15127 17115 17288 19560 19880 21610 22820 23146 25932 27384 29820 30254 32415 34230 34719 43220 45381 45640 46292 51864 57865 59640 60508 64830 68460 69438 75635 81011 86440 90762 92584 115730 121016 129660 136920 138876 151270 153431 162022 173595 181524 226905 231460 243033 259320 277752 302540 306862 324044 347190 352243 363048 405055 453810 460293 462920 486066 605080 613724 648088 694380 704486 767155 810110 907620 920586 972132 1056729 1074017 1215165 1227448 1388760 1408972 1534310 1620220 1761215 1815240 1841172 1944264 2113458 2148034 2301465 2430330 2465701 2817944 3068620 3222051 3240440 3522430 3682344 4226916 4296068 4602930 4860660 4931402 5283645 5370085 6137240 6444102 7044860 7397103 8453832 8592136 9205860 9721320 9862804 10567290 10740170 12328505 12888204 14089720 14794206 16110255 18411720 19725608 21134580 21480340 24657010 25009253 25776408 29588412 32220510 36985515 42269160 42960680 49314020 50018506 59176824 64441020 73971030 75027759 98628040 100037012 125046265 128882040 147942060 150055518 175064771 200074024 250092530 295884120 300111036 350129542 375138795 500185060 525194313 600222072 700259084 750277590 875323855 1000370120 1050388626 1400518168 1500555180 1750647710 2100777252 2625971565 3001110360 3501295420 4201554504 5251943130 7002590840 10503886260 21007772520
• Sum of all divisors σ(n): 73523220480
• Sum of proper divisors (its aliquot sum) s(n): 52515447960
• 21007772520 is an abundant number, because the sum of its proper divisors (52515447960) is greater than itself. Its abundance is 31507675440

Bases of 21007772520

• Binary: 10011100100001010010010101101101000₂
• Hexadecimal: 0x4E4292B68
• Base-36: 9NFHH0O

Squares and roots of 21007772520

• 21007772520 squared (21007772520²) is 441326506252067150400
• 21007772520 cubed (21007772520³) is 9271286850389784475367827008000
• The square root of 21007772520 is 144940.5827227143
• The cube root of 21007772520 is 2759.2645120683

Scales and comparisons

• 21,007,772,520 seconds is equal to 667 years, 51 weeks, 12 hours, 22 minutes.
• To count from 1 to 21,007,772,520 would take you about one thousand, three hundred thirty-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 21007772520 cubic inches would be around 229.9 feet tall.

Recreational maths with 21007772520

• 21007772520 backwards is 02527770012
• The number of decimal digits it has is: 11
• The sum of 21007772520's digits is 33
• More coming soon!