21789149970

Names of 21789149970

• Cardinal: 21789149970 can be written as Twenty-one billion, seven hundred eighty-nine million, one hundred forty-nine thousand, nine hundred seventy.

Scientific notation

• Scientific notation: 2.178914997 × 10¹⁰

Factors of 21789149970

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1063

Divisors of 21789149970

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 49 70 98 105 127 147 210 245 254 294 381 490 635 735 762 889 919 1270 1470 1778 1838 1905 2667 2757 3810 4445 4595 5334 5514 6223 6433 8890 9190 12446 12866 13335 13785 16129 18669 19299 26670 27570 31115 32165 32258 37338 38598 45031 48387 62230 64330 80645 90062 93345 96495 96774 112903 116713 135093 161290 186690 192990 225155 225806 233426 241935 270186 338709 350139 450310 483870 564515 583565 675465 677418 700278 790321 816991 1129030 1167130 1350930 1580642 1633982 1693545 1750695 2370963 2450973 3387090 3501390 3951605 4084955 4741926 4901946 5718937 7903210 8169910 11437874 11854815 12254865 14822551 17156811 23709630 24509730 28594685 29645102 34313622 44467653 57189370 74112755 85784055 88935306 103757857 148225510 171568110 207515714 222338265 311273571 444676530 518789285 622547142 726304999 1037578570 1452609998 1556367855 2178914997 3112735710 3631524995 4357829994 7263049990 10894574985 21789149970
• Sum of all divisors σ(n): 61381229760
• Sum of proper divisors (its aliquot sum) s(n): 39592079790
• 21789149970 is an abundant number, because the sum of its proper divisors (39592079790) is greater than itself. Its abundance is 17802929820

Bases of 21789149970

• Binary: 10100010010101111000000101100010010₂
• Hexadecimal: 0x512BC0B12
• Base-36: A0CP3PU

Squares and roots of 21789149970

• 21789149970 squared (21789149970²) is 474767056415151000900
• 21789149970 cubed (21789149970³) is 10344770593045175738805704973000
• The square root of 21789149970 is 147611.4831915187
• The cube root of 21789149970 is 2793.0589117039

Scales and comparisons

• 21,789,149,970 seconds is equal to 692 years, 43 weeks, 5 hours, 39 minutes, 30 seconds.
• To count from 1 to 21,789,149,970 would take you about one thousand, three hundred eighty-five 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 21789149970 cubic inches would be around 232.8 feet tall.

Recreational maths with 21789149970

• 21789149970 backwards is 07994198712
• The number of decimal digits it has is: 11
• The sum of 21789149970's digits is 57
• More coming soon!