21085520000

Names of 21085520000

• Cardinal: 21085520000 can be written as Twenty-one billion, eighty-five million, five hundred twenty thousand.

Scientific notation

• Scientific notation: 2.108552 × 10¹⁰

Factors of 21085520000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 5033

Divisors of 21085520000

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 53 64 80 100 106 125 128 160 200 212 250 265 320 400 424 500 530 625 640 800 848 1000 1060 1250 1325 1600 1696 2000 2120 2500 2650 3200 3392 4000 4240 4973 5000 5300 6625 6784 8000 8480 9946 10000 10600 13250 16000 16960 19892 20000 21200 24865 26500 33125 33920 39784 40000 42400 49730 53000 66250 79568 80000 84800 99460 106000 124325 132500 159136 169600 198920 212000 248650 263569 265000 318272 397840 424000 497300 527138 530000 621625 636544 795680 848000 994600 1054276 1060000 1243250 1317845 1591360 1989200 2108552 2120000 2486500 2635690 3108125 3182720 3978400 4217104 4240000 4973000 5271380 6216250 6589225 7956800 8434208 9946000 10542760 12432500 13178450 15913600 16868416 19892000 21085520 24865000 26356900 32946125 33736832 39784000 42171040 49730000 52713800 65892250 79568000 84342080 99460000 105427600 131784500 164730625 168684160 198920000 210855200 263569000 329461250 397840000 421710400 527138000 658922500 843420800 1054276000 1317845000 2108552000 2635690000 4217104000 5271380000 10542760000 21085520000
• Sum of all divisors σ(n): 53492236380
• Sum of proper divisors (its aliquot sum) s(n): 32406716380
• 21085520000 is an abundant number, because the sum of its proper divisors (32406716380) is greater than itself. Its abundance is 11321196380

Bases of 21085520000

• Binary: 10011101000110010111000000010000000₂
• Hexadecimal: 0x4E8CB8080
• Base-36: 9OPRVCW

Squares and roots of 21085520000

• 21085520000 squared (21085520000²) is 444599153670400000000
• 21085520000 cubed (21085520000³) is 9374604346700292608000000000000
• The square root of 21085520000 is 145208.5396937797
• The cube root of 21085520000 is 2762.6642340747

Scales and comparisons

• 21,085,520,000 seconds is equal to 670 years, 23 weeks, 4 days, 8 hours, 53 minutes, 20 seconds.
• To count from 1 to 21,085,520,000 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 21085520000 cubic inches would be around 230.2 feet tall.

Recreational maths with 21085520000

• 21085520000 backwards is 00002558012
• The number of decimal digits it has is: 11
• The sum of 21085520000's digits is 23
• More coming soon!