21054721320

Names of 21054721320

• Cardinal: 21054721320 can be written as Twenty-one billion, fifty-four million, seven hundred twenty-one thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.105472132 × 10¹⁰

Factors of 21054721320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1909

Divisors of 21054721320

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 73 90 120 146 180 219 292 360 365 438 584 657 730 733 876 1093 1095 1314 1460 1466 1752 2186 2190 2199 2628 2920 2932 3279 3285 3665 4372 4380 4398 5256 5465 5864 6558 6570 6597 7330 8744 8760 8796 9837 10930 10995 13116 13140 13194 14660 16395 17592 19674 21860 21990 26232 26280 26388 29320 32790 32985 39348 43720 43980 49185 52776 53509 65580 65970 78696 79789 87960 98370 107018 131160 131940 159578 160527 196740 214036 239367 263880 267545 319156 321054 393480 398945 428072 478734 481581 535090 638312 642108 718101 797890 801169 802635 957468 963162 1070180 1196835 1284216 1436202 1595780 1602338 1605270 1914936 1926324 2140360 2393670 2403507 2407905 2872404 3191560 3204676 3210540 3590505 3852648 4005845 4787340 4807014 4815810 5744808 6409352 6421080 7181010 7210521 8011690 9574680 9614028 9631620 12017535 14362020 14421042 16023380 19228056 19263240 24035070 28724040 28842084 32046760 36052605 48070140 57684168 58485337 72105210 96140280 116970674 144210420 175456011 233941348 288420840 292426685 350912022 467882696 526368033 584853370 701824044 877280055 1052736066 1169706740 1403648088 1754560110 2105472132 2339413480 2631840165 3509120220 4210944264 5263680330 7018240440 10527360660 21054721320
• Sum of all divisors σ(n): 69523393680
• Sum of proper divisors (its aliquot sum) s(n): 48468672360
• 21054721320 is an abundant number, because the sum of its proper divisors (48468672360) is greater than itself. Its abundance is 27413951040

Bases of 21054721320

• Binary: 10011100110111101011000110100101000₂
• Hexadecimal: 0x4E6F58D28
• Base-36: 9O7FQY0

Squares and roots of 21054721320

• 21054721320 squared (21054721320²) is 443301289862862542400
• 21054721320 cubed (21054721320³) is 9333585118859111847698683968000
• The square root of 21054721320 is 145102.4511164439
• The cube root of 21054721320 is 2761.3184784305

Scales and comparisons

• 21,054,721,320 seconds is equal to 669 years, 24 weeks, 4 days, 21 hours, 42 minutes.
• To count from 1 to 21,054,721,320 would take you about one thousand, three hundred thirty-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 21054721320 cubic inches would be around 230.1 feet tall.

Recreational maths with 21054721320

• 21054721320 backwards is 02312745012
• The number of decimal digits it has is: 11
• The sum of 21054721320's digits is 27
• More coming soon!