20938664992

Names of 20938664992

• Cardinal: 20938664992 can be written as Twenty billion, nine hundred thirty-eight million, six hundred sixty-four thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 2.0938664992 × 10¹⁰

Factors of 20938664992

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1994

Divisors of 20938664992

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 8 14 16 17 28 32 34 56 68 112 119 136 181 224 238 272 289 362 476 544 578 724 952 1156 1267 1448 1787 1904 2023 2312 2534 2896 3077 3574 3808 4046 4624 5068 5792 6154 7148 8092 9248 10136 12308 12509 14296 16184 20272 21539 24616 25018 28592 30379 32368 40544 43078 49232 50036 52309 57184 60758 64736 86156 98464 100072 104618 121516 172312 200144 209236 212653 243032 323447 344624 366163 400288 418472 425306 486064 516443 646894 689248 732326 836944 850612 972128 1032886 1293788 1464652 1673888 1701224 2065772 2264129 2587576 2929304 3402448 3615101 4131544 4528258 5175152 5498599 5858608 6804896 7230202 8263088 9056516 10350304 10997198 11717216 14460404 16526176 18113032 21994396 28920808 36226064 38490193 43988792 57841616 72452128 76980386 87977584 93476183 115683232 153960772 175955168 186952366 307921544 373904732 615843088 654333281 747809464 1231686176 1308666562 1495618928 2617333124 2991237856 5234666248 10469332496 20938664992
• Sum of all divisors σ(n): 50350966848
• Sum of proper divisors (its aliquot sum) s(n): 29412301856
• 20938664992 is an abundant number, because the sum of its proper divisors (29412301856) is greater than itself. Its abundance is 8473636864

Bases of 20938664992

• Binary: 10011100000000010101010110000100000₂
• Hexadecimal: 0x4E00AAC20
• Base-36: 9MAC9B4

Squares and roots of 20938664992

• 20938664992 squared (20938664992²) is 438427691647206360064
• 20938664992 cubed (20938664992³) is 9180090558616730626071823679488
• The square root of 20938664992 is 144701.9868281013
• The cube root of 20938664992 is 2756.2355470045

Scales and comparisons

• 20,938,664,992 seconds is equal to 665 years, 40 weeks, 5 days, 15 hours, 49 minutes, 52 seconds.
• To count from 1 to 20,938,664,992 would take you about one thousand, three hundred thirty-one 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 20938664992 cubic inches would be around 229.7 feet tall.

Recreational maths with 20938664992

• 20938664992 backwards is 29946683902
• The number of decimal digits it has is: 11
• The sum of 20938664992's digits is 58
• More coming soon!