18855242640

Names of 18855242640

• Cardinal: 18855242640 can be written as Eighteen billion, eight hundred fifty-five million, two hundred forty-two thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.885524264 × 10¹⁰

Factors of 18855242640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 39539

Divisors of 18855242640

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 17 18 20 24 26 27 30 34 36 39 40 45 48 51 52 54 60 65 68 72 78 80 85 90 102 104 108 117 120 130 135 136 144 153 156 170 180 195 204 208 216 221 234 240 255 260 270 272 306 312 340 351 360 390 408 432 442 459 468 510 520 540 585 612 624 663 680 702 720 765 780 816 884 918 936 1020 1040 1080 1105 1170 1224 1326 1360 1404 1530 1560 1755 1768 1836 1872 1989 2040 2160 2210 2295 2340 2448 2652 2808 3060 3120 3315 3510 3536 3672 3978 4080 4420 4590 4680 5304 5616 5967 6120 6630 7020 7344 7956 8840 9180 9360 9945 10608 11934 12240 13260 14040 15912 17680 18360 19890 23868 26520 28080 29835 31824 36720 39499 39780 47736 53040 59670 78998 79560 95472 118497 119340 157996 159120 197495 236994 238680 315992 355491 394990 473988 477360 513487 592485 631984 671483 710982 789980 947976 1026974 1066473 1184970 1342966 1421964 1540461 1579960 1777455 1895952 2014449 2053948 2132946 2369940 2567435 2685932 2843928 3080922 3159920 3357415 3554910 4028898 4107896 4265892 4621383 4739880 5134870 5332365 5371864 5687856 6043347 6161844 6714830 7109820 7702305 8057796 8215792 8531784 8729279 9242766 9479760 10072245 10269740 10664730 10743728 12086694 12323688 13429660 13864149 14219640 15404610 16115592 17063568 17458558 18130041 18485532 20144490 20539480 21329460 23106915 24173388 24647376 26187837 26859320 27728298 28439280 30216735 30809220 32231184 34917116 36260082 36971064 40288980 41078960 42658920 43646395 46213830 48346776 52375674 53718640 55456596 60433470 61618440 69320745 69834232 72520164 73942128 78563511 80577960 85317840 87292790 90650205 92427660 96693552 104751348 110913192 120866940 123236880 130939185 138641490 139668464 145040328 157127022 161155920 174585580 181300410 184855320 209502696 221826384 235690533 241733880 261878370 277282980 290080656 314254044 349171160 362600820 369710640 392817555 419005392 471381066 483467760 523756740 554565960 628508088 698342320 725201640 785635110 942762132 1047513480 1109131920 1178452665 1257016176 1450403280 1571270220 1885524264 2095026960 2356905330 3142540440 3771048528 4713810660 6285080880 9427621320 18855242640
• Sum of all divisors σ(n): 74057760000
• Sum of proper divisors (its aliquot sum) s(n): 55202517360
• 18855242640 is an abundant number, because the sum of its proper divisors (55202517360) is greater than itself. Its abundance is 36347274720

Bases of 18855242640

• Binary: 10001100011110111000010101110010000₂
• Hexadecimal: 0x463DC2B90
• Base-36: 8NTXAC0

Squares and roots of 18855242640

• 18855242640 squared (18855242640²) is 355520175013274169600
• 18855242640 cubed (18855242640³) is 6703419163290549688652511744000
• The square root of 18855242640 is 137314.3934188983
• The cube root of 18855242640 is 2661.6076851115

Scales and comparisons

• 18,855,242,640 seconds is equal to 599 years, 27 weeks, 6 days, 23 hours, 24 minutes.
• To count from 1 to 18,855,242,640 would take you about one thousand, one hundred ninety-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 18855242640 cubic inches would be around 221.8 feet tall.

Recreational maths with 18855242640

• 18855242640 backwards is 04624255881
• 18855242640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18855242640's digits is 45
• More coming soon!