3981320720

Names of 3981320720

• Cardinal: 3981320720 can be written as Three billion, nine hundred eighty-one million, three hundred twenty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 3.98132072 × 10⁹

Factors of 3981320720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 322

Divisors of 3981320720

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 52 65 73 80 104 130 146 208 229 260 292 365 458 520 584 730 916 949 1040 1145 1168 1460 1832 1898 2290 2920 2977 3664 3796 4580 4745 5840 5954 7592 9160 9490 11908 14885 15184 16717 18320 18980 23816 29770 33434 37960 47632 52441 59540 66868 75920 83585 104882 119080 133736 167170 209764 217321 238160 262205 267472 334340 419528 434642 524410 668680 681733 839056 869284 1048820 1086605 1337360 1363466 1738568 2097640 2173210 2726932 3408665 3477136 3828193 4195280 4346420 5453864 6817330 7656386 8692840 10907728 13634660 15312772 17385680 19140965 27269320 30625544 38281930 49766509 54538640 61251088 76563860 99533018 153127720 199066036 248832545 306255440 398132072 497665090 796264144 995330180 1990660360 3981320720
• Sum of all divisors σ(n): 10149491016
• Sum of proper divisors (its aliquot sum) s(n): 6168170296
• 3981320720 is an abundant number, because the sum of its proper divisors (6168170296) is greater than itself. Its abundance is 2186849576

Bases of 3981320720

• Binary: 11101101010011100010001000010000₂
• Hexadecimal: 0xED4E2210
• Base-36: 1TUDIQ8

Squares and roots of 3981320720

• 3981320720 squared (3981320720²) is 15850914675501318400
• 3981320720 cubed (3981320720³) is 63107575028525475333237248000
• The square root of 3981320720 is 63097.7077238151
• The cube root of 3981320720 is 1584.9262365869

Scales and comparisons

• 3,981,320,720 seconds is equal to 126 years, 30 weeks, 6 days, 2 hours, 25 minutes, 20 seconds.
• To count from 1 to 3,981,320,720 would take you about two hundred fifty-three 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 3981320720 cubic inches would be around 132.1 feet tall.

Recreational maths with 3981320720

• 3981320720 backwards is 0270231893
• The number of decimal digits it has is: 10
• The sum of 3981320720's digits is 35
• More coming soon!