12905209980

Names of 12905209980

• Cardinal: 12905209980 can be written as Twelve billion, nine hundred five million, two hundred nine thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 1.290520998 × 10¹⁰

Factors of 12905209980

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 68110

Divisors of 12905209980

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 27 30 36 39 45 52 54 60 65 78 81 90 108 117 130 135 156 162 180 195 234 243 260 270 324 351 390 405 468 486 540 585 702 729 780 810 972 1053 1170 1215 1404 1458 1620 1755 2106 2340 2430 2916 3159 3510 3645 4212 4860 5265 6318 7020 7290 9477 10530 12636 14580 15795 18954 21060 31590 37908 47385 63180 68087 94770 136174 189540 204261 272348 340435 408522 612783 680870 817044 885131 1021305 1225566 1361740 1770262 1838349 2042610 2451132 2655393 3063915 3540524 3676698 4085220 4425655 5310786 5515047 6127830 7353396 7966179 8851310 9191745 10621572 11030094 12255660 13276965 15932358 16545141 17702620 18383490 22060188 23898537 26553930 27575235 31864716 33090282 36766980 39830895 47797074 49635423 53107860 55150470 66180564 71695611 79661790 82725705 95594148 99270846 110300940 119492685 143391222 159323580 165451410 198541692 215086833 238985370 248177115 286782444 330902820 358478055 430173666 477970740 496354230 645260499 716956110 860347332 992708460 1075434165 1290520998 1433912220 2150868330 2581041996 3226302495 4301736660 6452604990 12905209980
• Sum of all divisors σ(n): 43759068192
• Sum of proper divisors (its aliquot sum) s(n): 30853858212
• 12905209980 is an abundant number, because the sum of its proper divisors (30853858212) is greater than itself. Its abundance is 17948648232

Bases of 12905209980

• Binary: 1100000001001101011110000001111100₂
• Hexadecimal: 0x30135E07C
• Base-36: 5XFFFR0

Squares and roots of 12905209980

• 12905209980 squared (12905209980²) is 166544444627891600400
• 12905209980 cubed (12905209980³) is 2149291028925424067840251992000
• The square root of 12905209980 is 113601.1002587563
• The cube root of 12905209980 is 2345.6057906057

Scales and comparisons

• 12,905,209,980 seconds is equal to 410 years, 17 weeks, 6 days, 20 hours, 33 minutes.
• To count from 1 to 12,905,209,980 would take you about eight hundred twenty 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 12905209980 cubic inches would be around 195.5 feet tall.

Recreational maths with 12905209980

• 12905209980 backwards is 08990250921
• 12905209980 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12905209980's digits is 45
• More coming soon!