21477507940

Names of 21477507940

• Cardinal: 21477507940 can be written as Twenty-one billion, four hundred seventy-seven million, five hundred seven thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.147750794 × 10¹⁰

Factors of 21477507940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 465

Divisors of 21477507940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 10 14 17 20 28 34 35 67 68 70 85 119 134 140 170 238 268 335 340 367 469 476 595 670 734 938 1139 1190 1340 1468 1835 1876 2278 2345 2380 2569 3670 4556 4690 5138 5695 6239 7340 7973 9380 10276 11390 12478 12845 15946 22780 24589 24956 25690 31195 31892 39865 43673 49178 51380 62390 79730 87346 98356 122945 124780 134689 159460 172123 174692 218365 245890 269378 344246 418013 436730 491780 538756 673445 688492 836026 860615 873460 942823 1346890 1672052 1721230 1885646 2090065 2289713 2693780 2926091 3442460 3771292 4180130 4579426 4714115 5852182 8360260 9024163 9158852 9428230 11448565 11704364 14630455 16027991 18048326 18856460 22897130 29260910 32055982 36096652 45120815 45794260 58521820 63169141 64111964 80139955 90241630 126338282 153410771 160279910 180483260 252676564 306821542 315845705 320559820 613643084 631691410 767053855 1073875397 1263382820 1534107710 2147750794 3068215420 4295501588 5369376985 10738753970 21477507940
• Sum of all divisors σ(n): 55544082048
• Sum of proper divisors (its aliquot sum) s(n): 34066574108
• 21477507940 is an abundant number, because the sum of its proper divisors (34066574108) is greater than itself. Its abundance is 12589066168

Bases of 21477507940

• Binary: 10100000000001010001100001101100100₂
• Hexadecimal: 0x50028C364
• Base-36: 9V75J6S

Squares and roots of 21477507940

• 21477507940 squared (21477507940²) is 461283347312763043600
• 21477507940 cubed (21477507940³) is 9907216754499645932257566184000
• The square root of 21477507940 is 146552.0656285677
• The cube root of 21477507940 is 2779.6788934363

Scales and comparisons

• 21,477,507,940 seconds is equal to 682 years, 47 weeks, 5 days, 6 hours, 25 minutes, 40 seconds.
• To count from 1 to 21,477,507,940 would take you about one thousand, three hundred sixty-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 21477507940 cubic inches would be around 231.6 feet tall.

Recreational maths with 21477507940

• 21477507940 backwards is 04970577412
• The number of decimal digits it has is: 11
• The sum of 21477507940's digits is 46
• More coming soon!