21643939352

Names of 21643939352

• Cardinal: 21643939352 can be written as Twenty-one billion, six hundred forty-three million, nine hundred thirty-nine thousand, three hundred fifty-two.

Scientific notation

• Scientific notation: 2.1643939352 × 10¹⁰

Factors of 21643939352

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 426

Divisors of 21643939352

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 7 8 14 28 31 49 56 62 98 124 163 196 217 223 248 326 343 392 434 446 652 686 868 892 1141 1304 1372 1519 1561 1736 1784 2282 2401 2744 3038 3122 4564 4802 5053 6076 6244 6913 7987 9128 9604 10106 10633 10927 12152 12488 13826 15974 19208 20212 21266 21854 27652 31948 35371 36349 40424 42532 43708 48391 55304 55909 63896 70742 72698 74431 76489 85064 87416 96782 111818 141484 145396 148862 152978 193564 223636 247597 254443 282968 290792 297724 305956 338737 387128 391363 447272 495194 508886 535423 595448 611912 677474 782726 990388 1017772 1070846 1126819 1354948 1565452 1733179 1781101 1980776 2035544 2141692 2253638 2371159 2709896 3130904 3466358 3562202 4283384 4507276 4742318 6932716 7124404 7887733 9014552 9484636 12132253 12467707 13865432 14248808 15775466 16598113 18969272 24264506 24935414 31550932 33196226 48529012 49870828 55214131 63101864 66392452 87273949 97058024 99741656 110428262 132784904 174547898 220856524 349095796 386498917 441713048 698191592 772997834 1545995668 2705492419 3091991336 5410984838 10821969676 21643939352
• Sum of all divisors σ(n): 49390817280
• Sum of proper divisors (its aliquot sum) s(n): 27746877928
• 21643939352 is an abundant number, because the sum of its proper divisors (27746877928) is greater than itself. Its abundance is 6102938576

Bases of 21643939352

• Binary: 10100001010000101000100111000011000₂
• Hexadecimal: 0x50A144E18
• Base-36: 9XY8QHK

Squares and roots of 21643939352

• 21643939352 squared (21643939352²) is 468460110673054179904
• 21643939352 cubed (21643939352³) is 10139322224238792570452273182208
• The square root of 21643939352 is 147118.7933338227
• The cube root of 21643939352 is 2786.8404322887

Scales and comparisons

• 21,643,939,352 seconds is equal to 688 years, 10 weeks, 6 days, 13 hours, 22 minutes, 32 seconds.
• To count from 1 to 21,643,939,352 would take you about one thousand, three hundred seventy-six 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 21643939352 cubic inches would be around 232.2 feet tall.

Recreational maths with 21643939352

• 21643939352 backwards is 25393934612
• The number of decimal digits it has is: 11
• The sum of 21643939352's digits is 47
• More coming soon!