18438728259824

Names of 18438728259824

• Cardinal: 18438728259824 can be written as Eighteen trillion, four hundred thirty-eight billion, seven hundred twenty-eight million, two hundred fifty-nine thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 1.8438728259824 × 10¹³

Factors of 18438728259824

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 133

Divisors of 18438728259824

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 8 16 19 29 38 58 76 83 116 152 166 232 304 332 361 464 551 664 722 841 1102 1328 1444 1577 1682 2204 2407 2888 3154 3364 4408 4814 5776 6308 6728 6859 6889 8816 9628 10469 12616 13456 13718 13778 15979 19256 20938 24389 25232 27436 27556 29963 31958 38512 41876 45733 48778 54872 55112 59926 63916 69803 83752 91466 97556 109744 110224 119852 127832 130891 139606 167504 182932 195112 198911 199781 239704 255664 261782 279212 303601 365864 390224 397822 399562 463391 479408 523564 558424 569297 607202 731728 795644 799124 868927 926782 1047128 1116848 1138594 1214404 1326257 1591288 1598248 1737854 1853564 2024287 2094256 2277188 2428808 2486929 2652514 3182576 3196496 3475708 3707128 3795839 4048574 4554376 4857616 4973858 5305028 5768419 5793649 6951416 7414256 7591678 8097148 8804429 9108752 9947716 10610056 11536838 11587298 13902832 15183356 16194296 16509613 17608858 19895432 21220112 23073676 23174596 25198883 30366712 32388592 33019226 35217716 38461453 39790864 46147352 46349192 47251651 50397766 60733424 66038452 70435432 72120941 76922906 92294704 92698384 94503302 100795532 110079331 132076904 140870864 144241882 153845812 167284151 168015821 189006604 201591064 220158662 264153808 288483764 307691624 334568302 336031642 378013208 403182128 440317324 478778777 576967528 615383248 669136604 672063284 730767607 756026416 880634648 957557554 1153935056 1338273208 1344126568 1370297879 1461535214 1761269296 1915115108 2091507289 2676546416 2688253136 2740595758 2923070428 3192300599 3830230216 4183014578 5481191516 5846140856 6384601198 7660460432 8366029156 10962383032 11692281712 12769202396 13884584533 16732058312 21924766064 25538404792 27769169066 33464116624 39738638491 51076809584 55538338132 60653711381 79477276982 111076676264 121307422762 158954553964 222153352528 242614845524 317909107928 485229691048 635818215856 970459382096 1152420516239 2304841032478 4609682064956 9219364129912 18438728259824
• Sum of all divisors σ(n): 39532408231200
• Sum of proper divisors (its aliquot sum) s(n): 21093679971376
• 18438728259824 is an abundant number, because the sum of its proper divisors (21093679971376) is greater than itself. Its abundance is 2654951711552

Bases of 18438728259824

• Binary: 100001100010100011001110110010001100011110000₂
• Hexadecimal: 0x10C519D918F0
• Base-36: 6JAMUQCQ8

Squares and roots of 18438728259824

• 18438728259824 squared (18438728259824²) is 339986699839632195252510976
• 18438728259824 cubed (18438728259824³) is 6268922370297325967436536702766939828224
• The square root of 18438728259824 is 4294034.0310509883
• The cube root of 18438728259824 is 26418.6317529905

Scales and comparisons

• 18,438,728,259,824 seconds is equal to 586,294 years, 27 weeks, 1 day, 17 hours, 3 minutes, 44 seconds.
• To count from 1 to 18,438,728,259,824 would take you about one million, four hundred sixty-five thousand, seven hundred thirty-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 18438728259824 cubic inches would be around 2201.6 feet tall.

Recreational maths with 18438728259824

• 18438728259824 backwards is 42895282783481
• The number of decimal digits it has is: 14
• The sum of 18438728259824's digits is 71
• More coming soon!