1997861120

Names of 1997861120

• Cardinal: 1997861120 can be written as One billion, nine hundred ninety-seven million, eight hundred sixty-one thousand, one hundred twenty.

Scientific notation

• Scientific notation: 1.99786112 × 10⁹

Factors of 1997861120

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 38117

Divisors of 1997861120

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 41 64 80 82 128 160 164 205 256 320 328 410 640 656 820 1280 1312 1640 2624 3280 5248 6560 10496 13120 26240 38069 52480 76138 152276 190345 304552 380690 609104 761380 1218208 1522760 1560829 2436416 3045520 3121658 4872832 6091040 6243316 7804145 9745664 12182080 12486632 15608290 24364160 24973264 31216580 48728320 49946528 62433160 99893056 124866320 199786112 249732640 399572224 499465280 998930560 1997861120
• Sum of all divisors σ(n): 4902350040
• Sum of proper divisors (its aliquot sum) s(n): 2904488920
• 1997861120 is an abundant number, because the sum of its proper divisors (2904488920) is greater than itself. Its abundance is 906627800

Bases of 1997861120

• Binary: 1110111000101001111000100000000₂
• Hexadecimal: 0x7714F100
• Base-36: X1H3I8

Squares and roots of 1997861120

• 1997861120 squared (1997861120²) is 3991449054807654400
• 1997861120 cubed (1997861120³) is 7974360879060961804156928000
• The square root of 1997861120 is 44697.4397477083
• The cube root of 1997861120 is 1259.4717530355

Scales and comparisons

• 1,997,861,120 seconds is equal to 63 years, 27 weeks, 2 days, 9 hours, 25 minutes, 20 seconds.
• To count from 1 to 1,997,861,120 would take you about one hundred twenty-seven 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 1997861120 cubic inches would be around 105 feet tall.

Recreational maths with 1997861120

• 1997861120 backwards is 0211687991
• The number of decimal digits it has is: 10
• The sum of 1997861120's digits is 44
• More coming soon!