20640959768

Names of 20640959768

• Cardinal: 20640959768 can be written as Twenty billion, six hundred forty million, nine hundred fifty-nine thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.0640959768 × 10¹⁰

Factors of 20640959768

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2985

Divisors of 20640959768

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 11 13 17 22 26 34 44 52 68 88 104 136 143 187 221 286 374 421 442 572 748 842 884 1144 1496 1684 1768 2431 2521 3368 4631 4862 5042 5473 7157 9262 9724 10084 10946 14314 18524 19448 20168 21892 27731 28628 32773 37048 42857 43784 55462 57256 60203 65546 78727 85714 93041 110924 120406 131092 157454 171428 186082 221848 240812 262184 314908 342856 360503 372164 471427 481624 557141 629816 721006 744328 942854 1023451 1061341 1114282 1442012 1885708 2046902 2122682 2228564 2884024 3771416 4093804 4245364 4457128 6128551 8187608 8490728 11674751 12257102 13797433 18042797 23349502 24514204 27594866 36085594 46699004 49028408 55189732 72171188 93398008 110379464 144342376 151771763 198470767 234556361 303543526 396941534 469112722 607087052 793883068 938225444 1214174104 1587766136 1876450888 2580119971 5160239942 10320479884 20640959768
• Sum of all divisors σ(n): 48275922240
• Sum of proper divisors (its aliquot sum) s(n): 27634962472
• 20640959768 is an abundant number, because the sum of its proper divisors (27634962472) is greater than itself. Its abundance is 6994002704

Bases of 20640959768

• Binary: 10011001110010011000000110100011000₂
• Hexadecimal: 0x4CE4C0D18
• Base-36: 9HD3EHK

Squares and roots of 20640959768

• 20640959768 squared (20640959768²) is 426049220144194613824
• 20640959768 cubed (20640959768³) is 8794064812184096182703480632832
• The square root of 20640959768 is 143669.6201985653
• The cube root of 20640959768 is 2743.1104573969

Scales and comparisons

• 20,640,959,768 seconds is equal to 656 years, 16 weeks, 3 days, 23 hours, 56 minutes, 8 seconds.
• To count from 1 to 20,640,959,768 would take you about one thousand, three hundred twelve 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 20640959768 cubic inches would be around 228.6 feet tall.

Recreational maths with 20640959768

• 20640959768 backwards is 86795904602
• The number of decimal digits it has is: 11
• The sum of 20640959768's digits is 56
• More coming soon!