21447643392

Names of 21447643392

• Cardinal: 21447643392 can be written as Twenty-one billion, four hundred forty-seven million, six hundred forty-three thousand, three hundred ninety-two.

Scientific notation

• Scientific notation: 2.1447643392 × 10¹⁰

Factors of 21447643392

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 189989

Divisors of 21447643392

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 72 84 96 98 112 126 128 144 147 168 192 196 224 252 256 288 294 336 384 392 441 448 504 576 588 672 768 784 882 896 1008 1152 1176 1344 1568 1764 1792 2016 2304 2352 2688 3136 3528 4032 4704 5376 6272 7056 8064 9408 12544 14112 16128 18816 28224 37632 56448 112896 189977 379954 569931 759908 1139862 1329839 1519816 1709793 2279724 2659678 3039632 3419586 3989517 4559448 5319356 6079264 6839172 7979034 9118896 9308873 10638712 11968551 12158528 13678344 15958068 18237792 18617746 21277424 23937102 24317056 27356688 27926619 31916136 36475584 37235492 42554848 47874204 48634112 54713376 55853238 63832272 72951168 74470984 83779857 85109696 95748408 109426752 111706476 127664544 145902336 148941968 167559714 170219392 191496816 218853504 223412952 255329088 297883936 335119428 340438784 382993632 437707008 446825904 510658176 595767872 670238856 765987264 893651808 1021316352 1191535744 1340477712 1531974528 1787303616 2383071488 2680955424 3063949056 3574607232 5361910848 7149214464 10723821696 21447643392
• Sum of all divisors σ(n): 71935359678
• Sum of proper divisors (its aliquot sum) s(n): 50487716286
• 21447643392 is an abundant number, because the sum of its proper divisors (50487716286) is greater than itself. Its abundance is 29040072894

Bases of 21447643392

• Binary: 10011111110011000010001000100000000₂
• Hexadecimal: 0x4FE611100
• Base-36: 9UPDFK0

Squares and roots of 21447643392

• 21447643392 squared (21447643392²) is 460001407070401265664
• 21447643392 cubed (21447643392³) is 9865946138664193784306926092288
• The square root of 21447643392 is 146450.1396107221
• The cube root of 21447643392 is 2778.3899114815

Scales and comparisons

• 21,447,643,392 seconds is equal to 681 years, 50 weeks, 2 days, 14 hours, 43 minutes, 12 seconds.
• To count from 1 to 21,447,643,392 would take you about one thousand, three hundred sixty-three 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 21447643392 cubic inches would be around 231.5 feet tall.

Recreational maths with 21447643392

• 21447643392 backwards is 29334674412
• The number of decimal digits it has is: 11
• The sum of 21447643392's digits is 45
• More coming soon!