19815999672

Names of 19815999672

• Cardinal: 19815999672 can be written as Nineteen billion, eight hundred fifteen million, nine hundred ninety-nine thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 1.9815999672 × 10¹⁰

Factors of 19815999672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1421208

Divisors of 19815999672

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 21 24 28 42 56 83 84 166 168 249 332 498 581 664 996 1162 1743 1992 2324 3486 4648 6972 13944 1421113 2842226 4263339 5684452 8526678 9947791 11368904 17053356 19895582 29843373 34106712 39791164 59686746 79582328 117952379 119373492 235904758 238746984 353857137 471809516 707714274 825666653 943619032 1415428548 1651333306 2476999959 2830857096 3302666612 4953999918 6605333224 9907999836 19815999672
• Sum of all divisors σ(n): 57299316480
• Sum of proper divisors (its aliquot sum) s(n): 37483316808
• 19815999672 is an abundant number, because the sum of its proper divisors (37483316808) is greater than itself. Its abundance is 17667317136

Bases of 19815999672

• Binary: 10010011101001000000010100010111000₂
• Hexadecimal: 0x49D2028B8
• Base-36: 93PXN7C

Squares and roots of 19815999672

• 19815999672 squared (19815999672²) is 392673843000704107584
• 19815999672 cubed (19815999672³) is 7781224744104932091653596712448
• The square root of 19815999672 is 140769.3136731155
• The cube root of 19815999672 is 2706.0677287705

Scales and comparisons

• 19,815,999,672 seconds is equal to 630 years, 4 weeks, 3 days, 20 hours, 21 minutes, 12 seconds.
• To count from 1 to 19,815,999,672 would take you about one thousand, two hundred sixty 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 19815999672 cubic inches would be around 225.5 feet tall.

Recreational maths with 19815999672

• 19815999672 backwards is 27699951891
• The number of decimal digits it has is: 11
• The sum of 19815999672's digits is 66
• More coming soon!