18028808640

Names of 18028808640

• Cardinal: 18028808640 can be written as Eighteen billion, twenty-eight million, eight hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.802880864 × 10¹⁰

Factors of 18028808640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2615

Divisors of 18028808640

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 41 45 48 60 61 64 72 80 82 90 96 120 122 123 144 160 164 180 183 192 205 240 244 246 288 305 320 328 360 366 369 410 480 488 492 549 576 610 615 656 720 732 738 820 915 960 976 984 1098 1220 1230 1312 1440 1464 1476 1640 1830 1845 1952 1968 2196 2440 2460 2501 2503 2624 2745 2880 2928 2952 3280 3660 3690 3904 3936 4392 4880 4920 5002 5006 5490 5856 5904 6560 7320 7380 7503 7509 7872 8784 9760 9840 10004 10012 10980 11712 11808 12505 12515 13120 14640 14760 15006 15018 17568 19520 19680 20008 20024 21960 22509 22527 23616 25010 25030 29280 29520 30012 30036 35136 37515 37545 39360 40016 40048 43920 45018 45054 50020 50060 58560 59040 60024 60072 75030 75090 80032 80096 87840 90036 90108 100040 100120 102623 112545 112635 118080 120048 120144 150060 150180 152683 160064 160192 175680 180072 180216 200080 200240 205246 225090 225270 240096 240288 300120 300360 305366 307869 360144 360432 400160 400480 410492 450180 450540 458049 480192 480576 513115 600240 600720 610732 615738 720288 720864 763415 800320 800960 820984 900360 901080 916098 923607 1026230 1200480 1201440 1221464 1231476 1374147 1440576 1441728 1526830 1539345 1641968 1800720 1802160 1832196 1847214 2052460 2290245 2400960 2402880 2442928 2462952 2748294 3053660 3078690 3283936 3601440 3604320 3664392 3694428 4104920 4580490 4618035 4885856 4925904 5496588 6107320 6157380 6260003 6567872 6870735 7202880 7208640 7328784 7388856 8209840 9160980 9236070 9771712 9851808 10993176 12214640 12314760 12520006 13741470 14657568 14777712 16419680 18321960 18472140 18780009 19703616 21986352 24429280 24629520 25040012 27482940 29315136 29555424 31300015 32839360 36643920 36944280 37560018 43972704 48858560 49259040 50080024 54965880 56340027 59110848 62600030 73287840 73888560 75120036 87945408 93900045 98518080 100160048 109931760 112680054 125200060 146575680 147777120 150240072 187800090 200320096 219863520 225360108 250400120 281700135 295554240 300480144 375600180 400640192 439727040 450720216 500800240 563400270 600960288 751200360 901440432 1001600480 1126800540 1201920576 1502400720 1802880864 2003200960 2253601080 3004801440 3605761728 4507202160 6009602880 9014404320 18028808640
• Sum of all divisors σ(n): 64591240896
• Sum of proper divisors (its aliquot sum) s(n): 46562432256
• 18028808640 is an abundant number, because the sum of its proper divisors (46562432256) is greater than itself. Its abundance is 28533623616

Bases of 18028808640

• Binary: 10000110010100110011100100111000000₂
• Hexadecimal: 0x43299C9C0
• Base-36: 8A5VXS0

Squares and roots of 18028808640

• 18028808640 squared (18028808640²) is 325037940977738649600
• 18028808640 cubed (18028808640³) is 5860046838627264613570412544000
• The square root of 18028808640 is 134271.3991883601
• The cube root of 18028808640 is 2622.1387970309

Scales and comparisons

• 18,028,808,640 seconds is equal to 573 years, 13 weeks, 3 days, 18 hours, 24 minutes.
• To count from 1 to 18,028,808,640 would take you about one thousand, one hundred forty-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 18028808640 cubic inches would be around 218.5 feet tall.

Recreational maths with 18028808640

• 18028808640 backwards is 04680882081
• 18028808640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18028808640's digits is 45
• More coming soon!