21241638390

Names of 21241638390

• Cardinal: 21241638390 can be written as Twenty-one billion, two hundred forty-one million, six hundred thirty-eight thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.124163839 × 10¹⁰

Factors of 21241638390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8494

Divisors of 21241638390

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 53 70 105 106 159 210 233 265 318 371 466 530 699 742 795 1113 1165 1398 1590 1631 1855 2226 2330 3262 3495 3710 4893 5565 6990 8155 8191 9786 11130 12349 16310 16382 24465 24573 24698 37047 40955 48930 49146 57337 61745 74094 81910 86443 114674 122865 123490 172011 172886 185235 245730 259329 286685 344022 370470 432215 434123 518658 573370 860055 864430 868246 1296645 1302369 1720110 1908503 2170615 2593290 2604738 3038861 3817006 4341230 5725509 6077722 6511845 9116583 9542515 11451018 13023690 13359521 15194305 18233166 19085030 26719042 28627545 30388610 40078563 45582915 57255090 66797605 80157126 91165830 101150659 133595210 200392815 202301318 303451977 400785630 505753295 606903954 708054613 1011506590 1416109226 1517259885 2124163839 3034519770 3540273065 4248327678 7080546130 10620819195 21241638390
• Sum of all divisors σ(n): 59624128512
• Sum of proper divisors (its aliquot sum) s(n): 38382490122
• 21241638390 is an abundant number, because the sum of its proper divisors (38382490122) is greater than itself. Its abundance is 17140851732

Bases of 21241638390

• Binary: 10011110010000110011010110111110110₂
• Hexadecimal: 0x4F219ADF6
• Base-36: 9RAQ12U

Squares and roots of 21241638390

• 21241638390 squared (21241638390²) is 451207201491521792100
• 21241638390 cubed (21241638390³) is 9584380213046774558592958719000
• The square root of 21241638390 is 145745.1144635729
• The cube root of 21241638390 is 2769.4657829755

Scales and comparisons

• 21,241,638,390 seconds is equal to 675 years, 21 weeks, 5 days, 7 hours, 6 minutes, 30 seconds.
• To count from 1 to 21,241,638,390 would take you about one thousand, three hundred fifty 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 21241638390 cubic inches would be around 230.8 feet tall.

Recreational maths with 21241638390

• 21241638390 backwards is 09383614212
• The number of decimal digits it has is: 11
• The sum of 21241638390's digits is 39
• More coming soon!