21421542800

Names of 21421542800

• Cardinal: 21421542800 can be written as Twenty-one billion, four hundred twenty-one million, five hundred forty-two thousand, eight hundred.

Scientific notation

• Scientific notation: 2.14215428 × 10¹⁰

Factors of 21421542800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7650565

Divisors of 21421542800

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 140 175 200 280 350 400 560 700 1400 2800 7650551 15301102 30602204 38252755 53553857 61204408 76505510 107107714 122408816 153011020 191263775 214215428 267769285 306022040 382527550 428430856 535538570 612044080 765055100 856861712 1071077140 1338846425 1530110200 2142154280 2677692850 3060220400 4284308560 5355385700 10710771400 21421542800
• Sum of all divisors σ(n): 58817443776
• Sum of proper divisors (its aliquot sum) s(n): 37395900976
• 21421542800 is an abundant number, because the sum of its proper divisors (37395900976) is greater than itself. Its abundance is 15974358176

Bases of 21421542800

• Binary: 10011111100110100101100110110010000₂
• Hexadecimal: 0x4FCD2CD90
• Base-36: 9U9U07K

Squares and roots of 21421542800

• 21421542800 squared (21421542800²) is 458882495932231840000
• 21421542800 cubed (21421542800³) is 9829971026783130260082752000000
• The square root of 21421542800 is 146361.0016363649
• The cube root of 21421542800 is 2777.2624051985

Scales and comparisons

• 21,421,542,800 seconds is equal to 681 years, 7 weeks, 1 day, 12 hours, 33 minutes, 20 seconds.
• To count from 1 to 21,421,542,800 would take you about one thousand, three hundred sixty-two 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 21421542800 cubic inches would be around 231.4 feet tall.

Recreational maths with 21421542800

• 21421542800 backwards is 00824512412
• The number of decimal digits it has is: 11
• The sum of 21421542800's digits is 29
• More coming soon!