71538128640

Names of 71538128640

• Cardinal: 71538128640 can be written as Seventy-one billion, five hundred thirty-eight million, one hundred twenty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 7.153812864 × 10¹⁰

Factors of 71538128640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 188200

Divisors of 71538128640

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 88 90 96 99 108 110 120 128 132 135 144 160 165 176 180 192 198 216 220 240 256 264 270 288 297 320 330 352 360 384 396 432 440 480 495 528 540 576 594 640 660 704 720 768 792 864 880 960 990 1056 1080 1152 1188 1280 1320 1408 1440 1485 1584 1728 1760 1920 1980 2112 2160 2304 2376 2640 2816 2880 2970 3168 3456 3520 3840 3960 4224 4320 4752 5280 5760 5940 6336 6912 7040 7920 8448 8640 9504 10560 11520 11880 12672 14080 15840 17280 19008 21120 23760 25344 31680 34560 38016 42240 47520 63360 76032 95040 126720 188179 190080 376358 380160 564537 752716 940895 1129074 1505432 1693611 1881790 2069969 2258148 2822685 3010864 3387222 3763580 4139938 4516296 5080833 5645370 6021728 6209907 6774444 7527160 8279876 8468055 9032592 10161666 10349845 11290740 12043456 12419814 13548888 15054320 16559752 16936110 18065184 18629721 20323332 20699690 22581480 24086912 24839628 25404165 27097776 30108640 31049535 33119504 33872220 36130368 37259442 40646664 41399380 45162960 48173824 49679256 50808330 54195552 55889163 60217280 62099070 66239008 67744440 72260736 74518884 81293328 82798760 90325920 93148605 99358512 101616660 108391104 111778326 120434560 124198140 132478016 135488880 144521472 149037768 162586656 165597520 180651840 186297210 198717024 203233320 216782208 223556652 240869120 248396280 264956032 270977760 279445815 298075536 325173312 331195040 361303680 372594420 397434048 406466640 433564416 447113304 496792560 529912064 541955520 558891630 596151072 650346624 662390080 722607360 745188840 794868096 812933280 894226608 993585120 1083911040 1117783260 1192302144 1300693248 1324780160 1490377680 1589736192 1625866560 1788453216 1987170240 2167822080 2235566520 2384604288 2649560320 2980755360 3251733120 3576906432 3974340480 4471133040 4769208576 5961510720 6503466240 7153812864 7948680960 8942266080 11923021440 14307625728 17884532160 23846042880 35769064320 71538128640
• Sum of all divisors σ(n): 276940742400
• Sum of proper divisors (its aliquot sum) s(n): 205402613760
• 71538128640 is an abundant number, because the sum of its proper divisors (205402613760) is greater than itself. Its abundance is 133864485120

Bases of 71538128640

• Binary: 1000010101000000000010011011100000000₂
• Hexadecimal: 0x10A8013700
• Base-36: WV3YDC0

Squares and roots of 71538128640

• 71538128640 squared (71538128640²) is 5117703849313188249600
• 71538128640 cubed (71538128640³) is 366110956313590036648421228544000
• The square root of 71538128640 is 267466.1261543225
• The cube root of 71538128640 is 4151.2528977523

Scales and comparisons

• 71,538,128,640 seconds is equal to 2,274 years, 35 weeks, 6 days, 14 hours, 24 minutes.
• To count from 1 to 71,538,128,640 would take you about four thousand, five hundred forty-nine 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 71538128640 cubic inches would be around 345.9 feet tall.

Recreational maths with 71538128640

• 71538128640 backwards is 04682183517
• 71538128640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 71538128640's digits is 45
• More coming soon!