12987938172

Names of 12987938172

• Cardinal: 12987938172 can be written as Twelve billion, nine hundred eighty-seven million, nine hundred thirty-eight thousand, one hundred seventy-two.

Scientific notation

• Scientific notation: 1.2987938172 × 10¹⁰

Factors of 12987938172

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 533

Divisors of 12987938172

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 11 12 22 23 33 37 44 46 66 69 74 92 111 121 132 138 148 222 242 253 276 363 407 444 457 484 506 529 726 759 814 851 914 1012 1058 1221 1371 1452 1518 1587 1628 1702 1828 2116 2442 2553 2742 2783 3036 3174 3404 4477 4884 5027 5106 5484 5566 5819 6348 8349 8954 9361 10054 10212 10511 11132 11638 13431 15081 16698 16909 17457 17908 18722 19573 20108 21022 23276 26862 28083 30162 31533 33396 33818 34914 37444 39146 42044 50727 53724 55297 56166 58719 60324 63066 64009 67636 69828 78292 101454 102971 110594 112332 115621 117438 126132 128018 165891 185999 192027 202908 205942 215303 221188 231242 234876 241753 256036 308913 331782 346863 371998 384054 388907 411884 430606 462484 483506 557997 617826 645909 663564 693726 725259 743996 768108 777814 861212 967012 1115994 1166721 1235652 1271831 1291818 1387452 1450518 1555628 2045989 2231988 2333442 2368333 2543662 2583636 2659283 2901036 3815493 4091978 4277977 4666884 4736666 5087324 5318566 6137967 7104999 7630986 7977849 8183956 8555954 8944861 9473332 10637132 12275934 12833931 14209998 15261972 15955698 17111908 17889722 24551868 25667862 26834583 28419996 29252113 31911396 35779444 47057747 51335724 53669166 58504226 87756339 94115494 98393471 107338332 117008452 141173241 175512678 188230988 196786942 282346482 295180413 351025356 393573884 564692964 590360826 1082328181 1180721652 2164656362 3246984543 4329312724 6493969086 12987938172
• Sum of all divisors σ(n): 35841310288
• Sum of proper divisors (its aliquot sum) s(n): 22853372116
• 12987938172 is an abundant number, because the sum of its proper divisors (22853372116) is greater than itself. Its abundance is 9865433944

Bases of 12987938172

• Binary: 1100000110001001000011010101111100₂
• Hexadecimal: 0x30624357C
• Base-36: 5YSOL8C

Squares and roots of 12987938172

• 12987938172 squared (12987938172²) is 168686537959694701584
• 12987938172 cubed (12987938172³) is 2190890325469245812168982464448
• The square root of 12987938172 is 113964.6356200027
• The cube root of 12987938172 is 2350.6072474479

Scales and comparisons

• 12,987,938,172 seconds is equal to 412 years, 50 weeks, 5 days, 8 hours, 36 minutes, 12 seconds.
• To count from 1 to 12,987,938,172 would take you about eight hundred twenty-five 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 12987938172 cubic inches would be around 195.9 feet tall.

Recreational maths with 12987938172

• 12987938172 backwards is 27183978921
• The number of decimal digits it has is: 11
• The sum of 12987938172's digits is 57
• More coming soon!