1989160720

Names of 1989160720

• Cardinal: 1989160720 can be written as One billion, nine hundred eighty-nine million, one hundred sixty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.98916072 × 10⁹

Factors of 1989160720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1754

Divisors of 1989160720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 103 163 206 326 412 515 652 815 824 1030 1304 1481 1630 1648 2060 2608 2962 3260 4120 5924 6520 7405 8240 11848 13040 14810 16789 23696 29620 33578 59240 67156 83945 118480 134312 152543 167890 241403 268624 305086 335780 482806 610172 671560 762715 965612 1207015 1220344 1343120 1525430 1931224 2414030 2440688 3050860 3862448 4828060 6101720 9656120 12203440 19312240 24864509 49729018 99458036 124322545 198916072 248645090 397832144 497290180 994580360 1989160720
• Sum of all divisors σ(n): 4701520512
• Sum of proper divisors (its aliquot sum) s(n): 2712359792
• 1989160720 is an abundant number, because the sum of its proper divisors (2712359792) is greater than itself. Its abundance is 723199072

Bases of 1989160720

• Binary: 1110110100100000010111100010000₂
• Hexadecimal: 0x76902F10
• Base-36: WWAM8G

Squares and roots of 1989160720

• 1989160720 squared (1989160720²) is 3956760369990918400
• 1989160720 cubed (1989160720³) is 7870632306438601638005248000
• The square root of 1989160720 is 44600.0080717481
• The cube root of 1989160720 is 1257.6408194045

Scales and comparisons

• 1,989,160,720 seconds is equal to 63 years, 12 weeks, 6 days, 16 hours, 38 minutes, 40 seconds.
• To count from 1 to 1,989,160,720 would take you about one 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 1989160720 cubic inches would be around 104.8 feet tall.

Recreational maths with 1989160720

• 1989160720 backwards is 0270619891
• The number of decimal digits it has is: 10
• The sum of 1989160720's digits is 43
• More coming soon!