18147520720

Names of 18147520720

• Cardinal: 18147520720 can be written as Eighteen billion, one hundred forty-seven million, five hundred twenty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.814752072 × 10¹⁰

Factors of 18147520720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1224

Divisors of 18147520720

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 23 28 35 40 46 56 70 80 92 112 115 140 161 184 230 280 322 368 460 560 644 805 920 1187 1288 1610 1840 2374 2576 3220 4748 5935 6440 8309 9496 11870 12880 16618 18992 23740 27301 33236 41545 47480 54602 66472 83090 94960 109204 132944 136505 166180 191107 218408 273010 332360 382214 436816 546020 664720 764428 955535 1092040 1408969 1528856 1911070 2184080 2817938 3057712 3822140 5635876 7044845 7644280 9862783 11271752 14089690 15288560 19725566 22543504 28179380 32406287 39451132 49313915 56358760 64812574 78902264 98627830 112717520 129625148 157804528 162031435 197255660 226844009 259250296 324062870 394511320 453688018 518500592 648125740 789022640 907376036 1134220045 1296251480 1814752072 2268440090 2592502960 3629504144 4536880180 9073760360 18147520720
• Sum of all divisors σ(n): 50359526784
• Sum of proper divisors (its aliquot sum) s(n): 32212006064
• 18147520720 is an abundant number, because the sum of its proper divisors (32212006064) is greater than itself. Its abundance is 14064485344

Bases of 18147520720

• Binary: 10000111001101011010011000011010000₂
• Hexadecimal: 0x439AD30D0
• Base-36: 8C4KCLS

Squares and roots of 18147520720

• 18147520720 squared (18147520720²) is 329332508282829318400
• 18147520720 cubed (18147520720³) is 5976568517832216675887477248000
• The square root of 18147520720 is 134712.7340677189
• The cube root of 18147520720 is 2627.8814361309

Scales and comparisons

• 18,147,520,720 seconds is equal to 577 years, 1 week, 5 days, 17 hours, 58 minutes, 40 seconds.
• To count from 1 to 18,147,520,720 would take you about one thousand, one hundred fifty-four 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 18147520720 cubic inches would be around 219 feet tall.

Recreational maths with 18147520720

• 18147520720 backwards is 02702574181
• The number of decimal digits it has is: 11
• The sum of 18147520720's digits is 37
• More coming soon!