20406540

Names of 20406540

• Cardinal: 20406540 can be written as Twenty million, four hundred six thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.040654 × 10⁷

Factors of 20406540

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 659

Divisors of 20406540

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 28 30 33 35 42 44 49 55 60 66 70 77 84 98 105 110 132 140 147 154 165 196 210 220 231 245 294 308 330 385 420 462 490 539 588 631 660 735 770 924 980 1078 1155 1262 1470 1540 1617 1893 2156 2310 2524 2695 2940 3155 3234 3786 4417 4620 5390 6310 6468 6941 7572 8085 8834 9465 10780 12620 13251 13882 16170 17668 18930 20823 22085 26502 27764 30919 32340 34705 37860 41646 44170 48587 53004 61838 66255 69410 83292 88340 92757 97174 104115 123676 132510 138820 145761 154595 185514 194348 208230 242935 265020 291522 309190 340109 371028 416460 463785 485870 583044 618380 680218 728805 927570 971740 1020327 1360436 1457610 1700545 1855140 2040654 2915220 3401090 4081308 5101635 6802180 10203270 20406540
• Sum of all divisors σ(n): 72624384
• Sum of proper divisors (its aliquot sum) s(n): 52217844
• 20406540 is an abundant number, because the sum of its proper divisors (52217844) is greater than itself. Its abundance is 31811304

Bases of 20406540

• Binary: 1001101110110000100001100₂
• Hexadecimal: 0x137610C
• Base-36: C5DSC

Squares and roots of 20406540

• 20406540 squared (20406540²) is 416426874771600
• 20406540 cubed (20406540³) is 8497831677101646264000
• The square root of 20406540 is 4517.3598484071
• The cube root of 20406540 is 273.2686376065

Scales and comparisons

• 20,406,540 seconds is equal to 33 weeks, 5 days, 4 hours, 29 minutes.
• To count from 1 to 20,406,540 would take you about fifty weeks!

  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 20406540 cubic inches would be around 22.8 feet tall.

Recreational maths with 20406540

• 20406540 backwards is 04560402
• 20406540 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20406540's digits is 21
• More coming soon!