21000409794

Names of 21000409794

• Cardinal: 21000409794 can be written as Twenty-one billion, four hundred nine thousand, seven hundred ninety-four.

Scientific notation

• Scientific notation: 2.1000409794 × 10¹⁰

Factors of 21000409794

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 21842

Divisors of 21000409794

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 19 21 26 31 38 39 42 57 62 63 78 91 93 114 117 126 133 171 182 186 217 234 247 266 273 279 342 399 403 434 494 546 558 589 651 741 798 806 819 1178 1197 1209 1302 1482 1638 1729 1767 1953 2223 2394 2418 2821 3458 3534 3627 3906 4123 4446 5187 5301 5642 7254 7657 8246 8463 10374 10602 12369 15314 15561 16926 21767 22971 24738 25389 31122 37107 43534 45942 50778 53599 65301 68913 74214 107198 130602 137826 152369 160797 195903 282971 304738 321594 391806 413573 457107 482391 565942 674777 827146 848913 914214 964782 1240719 1349554 1371321 1697826 1980797 2024331 2481438 2546739 2742642 2895011 3722157 3961594 4048662 4723439 5093478 5376449 5790022 5942391 6072993 7444314 8685033 8772101 9446878 10752898 11884782 12145986 12820763 14170317 16129347 17370066 17544202 17827173 25641526 26055099 26316303 28340634 32258694 35654346 37635143 38462289 42510951 48388041 52110198 52632606 61404707 75270286 76924578 78948909 85021902 89745341 96776082 112905429 115386867 122809414 157897818 166669919 179490682 184214121 225810858 230773734 269236023 333339838 338716287 368428242 500009757 538472046 552642363 677432574 807708069 1000019514 1105284726 1166689433 1500029271 1615416138 2333378866 3000058542 3500068299 7000136598 10500204897 21000409794
• Sum of all divisors σ(n): 60852879360
• Sum of proper divisors (its aliquot sum) s(n): 39852469566
• 21000409794 is an abundant number, because the sum of its proper divisors (39852469566) is greater than itself. Its abundance is 18852059772

Bases of 21000409794

• Binary: 10011100011101110001101001011000010₂
• Hexadecimal: 0x4E3B8D2C2
• Base-36: 9NB3NWI

Squares and roots of 21000409794

• 21000409794 squared (21000409794²) is 441017211515931122436
• 21000409794 cubed (21000409794³) is 9261542168041729530634387538184
• The square root of 21000409794 is 144915.1813786257
• The cube root of 21000409794 is 2758.9421221465

Scales and comparisons

• 21,000,409,794 seconds is equal to 667 years, 38 weeks, 6 days, 7 hours, 9 minutes, 54 seconds.
• To count from 1 to 21,000,409,794 would take you about one thousand, three hundred thirty-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 21000409794 cubic inches would be around 229.9 feet tall.

Recreational maths with 21000409794

• 21000409794 backwards is 49790400012
• The number of decimal digits it has is: 11
• The sum of 21000409794's digits is 36
• More coming soon!