72189438720

Names of 72189438720

• Cardinal: 72189438720 can be written as Seventy-two billion, one hundred eighty-nine million, four hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 7.218943872 × 10¹⁰

Factors of 72189438720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 156

Divisors of 72189438720

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 128 139 140 160 168 192 210 224 240 256 278 280 320 336 384 417 420 448 480 556 560 640 672 695 768 834 840 896 960 973 1112 1120 1280 1344 1390 1668 1680 1792 1920 1946 2085 2224 2240 2688 2780 2919 3336 3360 3840 3892 4170 4448 4480 4865 5376 5560 5838 6672 6720 7784 8340 8896 8960 9730 11120 11676 13344 13440 14595 15568 16680 17792 19321 19460 22240 23352 26688 26880 29190 31136 33360 35584 38642 38920 44480 46704 53376 57963 58380 62272 66720 77284 77840 88960 93408 96605 106752 115926 116760 124544 133440 135247 154568 155680 177920 186816 193210 231852 233520 249088 266880 270494 289815 309136 311360 373632 386420 405741 463704 467040 533760 540988 579630 618272 622720 676235 747264 772840 811482 927408 934080 1081976 1159260 1236544 1245440 1352470 1545680 1622964 1854816 1868160 2028705 2163952 2318520 2473088 2685619 2704940 3091360 3245928 3709632 3736320 4057410 4327904 4637040 4946176 5371238 5409880 6182720 6491856 7419264 8056857 8114820 8655808 9274080 10742476 10819760 12365440 12983712 13428095 14838528 16113714 16229640 17311616 18548160 18799333 21484952 21639520 24730880 25967424 26856190 32227428 32459280 34623232 37096320 37598666 40284285 42969904 43279040 51934848 53712380 56397999 64454856 64918560 74192640 75197332 80568570 85939808 86558080 93996665 103869696 107424760 112795998 128909712 129837120 150394664 161137140 171879616 173116160 187993330 214849520 225591996 257819424 259674240 281989995 300789328 322274280 343759232 375986660 429699040 451183992 515638848 519348480 563979990 601578656 644548560 687518464 751973320 859398080 902367984 1031277696 1127959980 1203157312 1289097120 1503946640 1718796160 1804735968 2062555392 2255919960 2406314624 2578194240 3007893280 3437592320 3609471936 4511839920 4812629248 5156388480 6015786560 7218943872 9023679840 10312776960 12031573120 14437887744 18047359680 24063146240 36094719360 72189438720
• Sum of all divisors σ(n): 265400808960
• Sum of proper divisors (its aliquot sum) s(n): 193211370240
• 72189438720 is an abundant number, because the sum of its proper divisors (193211370240) is greater than itself. Its abundance is 121021931520

Bases of 72189438720

• Binary: 1000011001110110100110110101100000000₂
• Hexadecimal: 0x10CED36B00
• Base-36: X5VQ7EO

Squares and roots of 72189438720

• 72189438720 squared (72189438720²) is 5211315062708635238400
• 72189438720 cubed (72189438720³) is 376201909370017980757309390848000
• The square root of 72189438720 is 268680.9236250313
• The cube root of 72189438720 is 4163.8130472933

Scales and comparisons

• 72,189,438,720 seconds is equal to 2,295 years, 20 weeks, 5 days, 21 hours, 52 minutes.
• To count from 1 to 72,189,438,720 would take you about four thousand, five hundred ninety 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 72189438720 cubic inches would be around 347 feet tall.

Recreational maths with 72189438720

• 72189438720 backwards is 02783498127
• The number of decimal digits it has is: 11
• The sum of 72189438720's digits is 51
• More coming soon!