21073454820

Names of 21073454820

• Cardinal: 21073454820 can be written as Twenty-one billion, seventy-three million, four hundred fifty-four thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 2.107345482 × 10¹⁰

Factors of 21073454820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 10643180

Divisors of 21073454820

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 132 165 180 198 220 330 396 495 660 990 1980 10643159 21286318 31929477 42572636 53215795 63858954 95788431 106431590 117074749 127717908 159647385 191576862 212863180 234149498 319294770 351224247 383153724 468298996 478942155 585373745 638589540 702448494 957884310 1053672741 1170747490 1404896988 1756121235 1915768620 2107345482 2341494980 3512242470 4214690964 5268363705 7024484940 10536727410 21073454820
• Sum of all divisors σ(n): 69733984320
• Sum of proper divisors (its aliquot sum) s(n): 48660529500
• 21073454820 is an abundant number, because the sum of its proper divisors (48660529500) is greater than itself. Its abundance is 27587074680

Bases of 21073454820

• Binary: 10011101000000100110110011011100100₂
• Hexadecimal: 0x4E81366E4
• Base-36: 9OIL9T0

Squares and roots of 21073454820

• 21073454820 squared (21073454820²) is 444090498050581232400
• 21073454820 cubed (21073454820³) is 9358521046660221675721320168000
• The square root of 21073454820 is 145166.9894294153
• The cube root of 21073454820 is 2762.1371993951

Scales and comparisons

• 21,073,454,820 seconds is equal to 670 years, 3 weeks, 4 days, 17 hours, 27 minutes.
• To count from 1 to 21,073,454,820 would take you about one thousand, three hundred forty 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 21073454820 cubic inches would be around 230.2 feet tall.

Recreational maths with 21073454820

• 21073454820 backwards is 02845437012
• 21073454820 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21073454820's digits is 36
• More coming soon!