18728919000

Names of 18728919000

• Cardinal: 18728919000 can be written as Eighteen billion, seven hundred twenty-eight million, nine hundred nineteen thousand.

Scientific notation

• Scientific notation: 1.8728919 × 10¹⁰

Factors of 18728919000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5171

Divisors of 18728919000

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 25 30 33 36 37 40 44 45 50 55 60 66 72 74 75 88 90 99 100 110 111 120 125 132 148 150 165 180 185 198 200 220 222 225 250 264 275 296 300 330 333 360 370 375 396 407 440 444 450 495 500 550 555 600 660 666 740 750 792 814 825 888 900 925 990 1000 1100 1110 1125 1221 1320 1332 1375 1480 1500 1628 1650 1665 1800 1850 1980 2035 2200 2220 2250 2442 2475 2664 2750 2775 3000 3256 3300 3330 3663 3700 3960 4070 4125 4440 4500 4625 4884 4950 5113 5500 5550 6105 6600 6660 7326 7400 8140 8250 8325 9000 9250 9768 9900 10175 10226 11000 11100 12210 12375 13320 13875 14652 15339 16280 16500 16650 18315 18500 19800 20350 20452 22200 24420 24750 25565 27750 29304 30525 30678 33000 33300 36630 37000 40700 40904 41625 46017 48840 49500 50875 51130 55500 56243 61050 61356 66600 73260 76695 81400 83250 91575 92034 99000 101750 102260 111000 112486 122100 122712 127825 146520 152625 153390 166500 168729 183150 184068 189181 203500 204520 224972 230085 244200 255650 281215 305250 306780 333000 337458 366300 368136 378362 383475 407000 449944 457875 460170 506187 511300 562430 567543 610500 613560 639125 674916 732600 756724 766950 843645 915750 920340 945905 1012374 1022600 1124860 1135086 1150425 1221000 1278250 1349832 1406075 1513448 1533900 1687290 1702629 1831500 1840680 1891810 1917375 2024748 2080991 2249720 2270172 2300850 2530935 2556500 2812150 2837715 3067800 3374580 3405258 3663000 3783620 3834750 4049496 4161982 4218225 4540344 4601700 4729525 5061870 5113000 5624300 5675430 5752125 6242973 6749160 6810516 7030375 7567240 7669500 8323964 8436450 8513145 9203400 9459050 10123740 10404955 11248600 11350860 11504250 12485946 12654675 13621032 14060750 14188575 15339000 16647928 16872900 17026290 18728919 18918100 20247480 20809910 21091125 22701720 23008500 23647625 24971892 25309350 28121500 28377150 31214865 33745800 34052580 37457838 37836200 41619820 42182250 42565725 46017000 47295250 49943784 50618700 52024775 56243000 56754300 62429730 63273375 68105160 70942875 74915676 83239640 84364500 85131450 93644595 94590500 101237400 104049550 113508600 124859460 126546750 141885750 149831352 156074325 168729000 170262900 187289190 189181000 208099100 212828625 249718920 253093500 260123875 283771500 312148650 340525800 374578380 416198200 425657250 468222975 506187000 520247750 567543000 624297300 749156760 780371625 851314500 936445950 1040495500 1248594600 1560743250 1702629000 1872891900 2080991000 2341114875 3121486500 3745783800 4682229750 6242973000 9364459500 18728919000
• Sum of all divisors σ(n): 70938953280
• Sum of proper divisors (its aliquot sum) s(n): 52210034280
• 18728919000 is an abundant number, because the sum of its proper divisors (52210034280) is greater than itself. Its abundance is 33481115280

Bases of 18728919000

• Binary: 10001011100010101001001111111011000₂
• Hexadecimal: 0x45C549FD8
• Base-36: 8LQPQE0

Squares and roots of 18728919000

• 18728919000 squared (18728919000²) is 350772406908561000000
• 18728919000 cubed (18728919000³) is 6569587996425479375559000000000
• The square root of 18728919000 is 136853.6407992129
• The cube root of 18728919000 is 2655.6504093483

Scales and comparisons

• 18,728,919,000 seconds is equal to 595 years, 27 weeks, 21 hours, 30 minutes.
• To count from 1 to 18,728,919,000 would take you about one thousand, one hundred ninety-one 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 18728919000 cubic inches would be around 221.3 feet tall.

Recreational maths with 18728919000

• 18728919000 backwards is 00091982781
• 18728919000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18728919000's digits is 45
• More coming soon!