21180452940

Names of 21180452940

• Cardinal: 21180452940 can be written as Twenty-one billion, one hundred eighty million, four hundred fifty-two thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.118045294 × 10¹⁰

Factors of 21180452940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 281

Divisors of 21180452940

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 61 83 90 108 122 127 135 166 180 183 244 249 254 270 305 332 366 381 415 498 508 540 549 610 635 732 747 762 830 915 996 1098 1143 1220 1245 1270 1494 1524 1647 1660 1830 1905 2196 2241 2286 2490 2540 2745 2988 3294 3429 3660 3721 3735 3810 4482 4572 4980 5063 5490 5715 6588 6858 7442 7470 7620 7747 8235 8964 10126 10541 10980 11163 11205 11430 13716 14884 14940 15189 15494 16470 17145 18605 20252 21082 22326 22410 22860 23241 25315 30378 30988 31623 32940 33489 34290 37210 38735 42164 44652 44820 45567 46482 50630 52705 55815 60756 63246 66978 68580 69723 74420 75945 77470 91134 92964 94869 100467 101260 105410 111630 116205 126492 133956 136701 139446 151890 154940 158115 167445 182268 189738 200934 209169 210820 223260 227835 232410 273402 278892 284607 303780 308843 316230 334890 348615 379476 401868 418338 455670 464820 472567 474345 502335 546804 569214 617686 632460 643001 669780 683505 697230 836676 911340 926529 945134 948690 1004670 1045845 1138428 1235372 1286002 1367010 1394460 1417701 1423035 1544215 1853058 1890268 1897380 1929003 2009340 2091690 2362835 2572004 2734020 2779587 2835402 2846070 3088430 3215005 3706116 3858006 4183380 4253103 4632645 4725670 5559174 5670804 5692140 5787009 6176860 6430010 7088505 7716012 8338761 8506206 9265290 9451340 9645015 11118348 11574018 12759309 12860020 13897935 14177010 16677522 17012412 17361027 18530580 19290030 21265515 23148036 25518618 27795870 28354020 28935045 33355044 34722054 38580060 39223061 41693805 42531030 51037236 55591740 57870090 63796545 69444108 78446122 83387610 85062060 86805135 115740180 117669183 127593090 156892244 166775220 173610270 196115305 235338366 255186180 347220540 353007549 392230610 470676732 588345915 706015098 784461220 1059022647 1176691830 1412030196 1765037745 2118045294 2353383660 3530075490 4236090588 5295113235 7060150980 10590226470 21180452940
• Sum of all divisors σ(n): 68333690880
• Sum of proper divisors (its aliquot sum) s(n): 47153237940
• 21180452940 is an abundant number, because the sum of its proper divisors (47153237940) is greater than itself. Its abundance is 25972785000

Bases of 21180452940

• Binary: 10011101110011101000001000001001100₂
• Hexadecimal: 0x4EE74104C
• Base-36: 9QAAM30

Squares and roots of 21180452940

• 21180452940 squared (21180452940²) is 448611586743554643600
• 21180452940 cubed (21180452940³) is 9501796601360586977088272184000
• The square root of 21180452940 is 145535.0574260375
• The cube root of 21180452940 is 2766.8041243619

Scales and comparisons

• 21,180,452,940 seconds is equal to 673 years, 24 weeks, 4 days, 3 hours, 9 minutes.
• To count from 1 to 21,180,452,940 would take you about one thousand, three hundred forty-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 21180452940 cubic inches would be around 230.6 feet tall.

Recreational maths with 21180452940

• 21180452940 backwards is 04925408112
• 21180452940 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21180452940's digits is 36
• More coming soon!