21396610890

Names of 21396610890

• Cardinal: 21396610890 can be written as Twenty-one billion, three hundred ninety-six million, six hundred ten thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.139661089 × 10¹⁰

Factors of 21396610890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 67609

Divisors of 21396610890

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 5 6 9 10 15 17 18 23 27 30 34 45 46 51 54 69 81 85 90 102 115 135 138 153 162 170 207 230 255 270 306 345 391 405 414 459 510 621 690 765 782 810 918 1035 1173 1242 1377 1530 1863 1955 2070 2295 2346 2754 3105 3519 3726 3910 4590 5865 6210 6885 7038 9315 10557 11730 13770 17595 18630 21114 31671 35190 52785 63342 67559 105570 135118 158355 202677 316710 337795 405354 608031 675590 1013385 1148503 1216062 1553857 1824093 2026770 2297006 3040155 3107714 3445509 3648186 4661571 5472279 5742515 6080310 6891018 7769285 9120465 9323142 10336527 10944558 11485030 13984713 15538570 17227545 18240930 20673054 23307855 26415569 27361395 27969426 31009581 34455090 41954139 46615710 51682635 52831138 54722790 62019162 69923565 79246707 83908278 93028743 103365270 125862417 132077845 139847130 155047905 158493414 186057486 209770695 237740121 251724834 264155690 310095810 396233535 419541390 465143715 475480242 629312085 713220363 792467070 930287430 1188700605 1258624170 1426440726 2139661089 2377401210 3566101815 4279322178 7132203630 10698305445 21396610890
• Sum of all divisors σ(n): 63566933760
• Sum of proper divisors (its aliquot sum) s(n): 42170322870
• 21396610890 is an abundant number, because the sum of its proper divisors (42170322870) is greater than itself. Its abundance is 20773711980

Bases of 21396610890

• Binary: 10011111011010101100101111101001010₂
• Hexadecimal: 0x4FB565F4A
• Base-36: 9TUZMMI

Squares and roots of 21396610890

• 21396610890 squared (21396610890²) is 457814957578066592100
• 21396610890 cubed (21396610890³) is 9795688506919747669672047969000
• The square root of 21396610890 is 146275.8041851077
• The cube root of 21396610890 is 2776.1845286351

Scales and comparisons

• 21,396,610,890 seconds is equal to 680 years, 17 weeks, 6 days, 23 hours, 1 minute, 30 seconds.
• To count from 1 to 21,396,610,890 would take you about one thousand, three hundred sixty 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 21396610890 cubic inches would be around 231.3 feet tall.

Recreational maths with 21396610890

• 21396610890 backwards is 09801669312
• 21396610890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21396610890's digits is 45
• More coming soon!