18439868328720

Names of 18439868328720

• Cardinal: 18439868328720 can be written as Eighteen trillion, four hundred thirty-nine billion, eight hundred sixty-eight million, three hundred twenty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.843986832872 × 10¹³

Factors of 18439868328720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 976674

Divisors of 18439868328720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 86293 172586 258879 345172 431465 517758 690344 862930 890371 1035516 1294395 1380688 1725860 1780742 2071032 2588790 2671113 3451720 3561484 4142064 4451855 5177580 5342226 6903440 7122968 8903710 10355160 10684452 13355565 14245936 17807420 20710320 21368904 26711130 35614840 42737808 53422260 71229680 106844520 213689040 76832784703 153665569406 230498354109 307331138812 384163923515 460996708218 614662277624 768327847030 921993416436 1152491770545 1229324555248 1536655694060 1843986832872 2304983541090 3073311388120 3687973665744 4609967082180 6146622776240 9219934164360 18439868328720
• Sum of all divisors σ(n): 57164318457792
• Sum of proper divisors (its aliquot sum) s(n): 38724450129072
• 18439868328720 is an abundant number, because the sum of its proper divisors (38724450129072) is greater than itself. Its abundance is 20284581800352

Bases of 18439868328720

• Binary: 100001100010101011101110011010010101100010000₂
• Hexadecimal: 0x10C55DCD2B10
• Base-36: 6JB5PHZIO

Squares and roots of 18439868328720

• 18439868328720 squared (18439868328720²) is 340028743980530925976838400
• 18439868328720 cubed (18439868328720³) is 6270085266981033566210797140437518848000
• The square root of 18439868328720 is 4294166.7793321675
• The cube root of 18439868328720 is 26419.1762308809

Scales and comparisons

• 18,439,868,328,720 seconds is equal to 586,330 years, 40 weeks, 1 day, 22 hours, 52 minutes.
• To count from 1 to 18,439,868,328,720 would take you about one million, four hundred sixty-five thousand, eight hundred twenty-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 18439868328720 cubic inches would be around 2201.6 feet tall.

Recreational maths with 18439868328720

• 18439868328720 backwards is 02782386893481
• The number of decimal digits it has is: 14
• The sum of 18439868328720's digits is 69
• More coming soon!