12748685985

Names of 12748685985

• Cardinal: 12748685985 can be written as Twelve billion, seven hundred forty-eight million, six hundred eighty-five thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 1.2748685985 × 10¹⁰

Factors of 12748685985

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 139

Divisors of 12748685985

• Number of divisors d(n): 480
• Complete list of divisors:
  1 3 5 7 9 15 17 21 23 27 31 35 45 49 51 53 63 69 81 85 93 105 115 119 135 147 153 155 159 161 189 207 217 245 255 265 279 315 345 357 371 391 405 441 459 465 477 483 527 567 595 621 651 713 735 765 795 805 833 837 901 945 1035 1071 1085 1113 1127 1173 1219 1323 1377 1395 1431 1449 1519 1581 1643 1785 1855 1863 1953 1955 2139 2205 2295 2385 2415 2499 2511 2597 2635 2703 2737 2835 3105 3213 3255 3339 3381 3519 3565 3657 3689 3969 4165 4185 4293 4347 4505 4557 4743 4929 4991 5355 5565 5635 5859 5865 6095 6307 6417 6615 6885 7155 7245 7497 7595 7791 7905 8109 8211 8215 8533 9315 9639 9765 10017 10143 10557 10695 10971 11067 11501 12121 12495 12555 12985 13041 13515 13671 13685 14229 14787 14973 16065 16695 16905 17577 17595 18285 18445 18921 19159 19251 19845 20723 21465 21735 22491 22785 23373 23715 24327 24633 24645 24955 25599 25823 27931 29295 30051 30429 31535 31671 32085 32913 33201 34503 34937 36363 37485 37789 38955 40545 41013 41055 42665 42687 44149 44361 44919 48195 50085 50715 52785 54855 55335 56763 57477 57505 57753 59731 60605 62169 65205 67473 68355 70119 71145 72981 73899 73935 74865 76797 77469 80507 83793 84847 87885 91287 94605 95795 96255 98739 99603 103509 103615 104811 109089 112455 113367 116865 121635 123039 123165 127995 129115 132447 133083 134757 139655 145061 150255 152145 158355 164565 166005 170289 172431 172515 174685 179193 181815 186507 188945 195517 205065 210357 213435 220745 221697 221805 224595 230391 232407 241521 251379 254541 264523 283815 287385 288765 298655 298809 310527 310845 314433 327267 337365 340101 350595 364905 369495 383985 387345 397341 402535 404271 418965 424235 435183 456435 493695 498015 510867 517293 517545 524055 537579 545445 559521 566835 586551 593929 615195 642413 662235 665415 673785 691173 697221 724563 725305 754137 763623 793569 851445 862155 895965 931581 932535 943299 977585 981801 1015427 1020303 1051785 1108485 1151955 1162035 1192023 1207605 1256895 1272705 1305549 1322615 1368619 1494045 1551879 1552635 1572165 1612737 1636335 1678563 1700505 1759653 1781787 1851661 1927239 1986705 2021355 2091663 2173689 2175915 2262411 2290869 2380707 2554335 2586465 2687895 2797605 2829897 2932755 2969645 3046281 3060909 3212065 3455865 3486105 3576069 3622815 3770685 3818115 3916647 3967845 4105857 4496891 4657905 4716495 4838211 4909005 5077135 5101515 5278959 5345361 5554983 5781717 5960115 6521067 6527745 6843095 6872607 7142121 7759395 8063685 8392815 8798265 8908935 9138843 9258305 9636195 10458315 10868445 11312055 11454345 11749941 11903535 12317571 13490673 14149485 15231405 15304545 15836877 16036083 16664949 17345151 17880345 19583235 20529285 21426363 22484455 24191055 26394795 26726805 27416529 27774915 28908585 31478237 32605335 34363035 35710605 36952713 40472019 45694215 48108249 49994847 52035453 58749705 61587855 67453365 79184385 80180415 82249587 83324745 86725755 94434711 107131815 110858139 121416057 137082645 149984541 157391185 184763565 202360095 240541245 249974235 260177265 283304133 364248171 411247935 472173555 554290695 607080285 749922705 849912399 1416520665 1821240855 2549737197 4249561995 12748685985
• Sum of all divisors σ(n): 30891497472
• Sum of proper divisors (its aliquot sum) s(n): 18142811487
• 12748685985 is an abundant number, because the sum of its proper divisors (18142811487) is greater than itself. Its abundance is 5394125502

Bases of 12748685985

• Binary: 1011110111111000011000001010100001₂
• Hexadecimal: 0x2F7E182A1
• Base-36: 5UU8L29

Squares and roots of 12748685985

• 12748685985 squared (12748685985²) is 162528994344135420225
• 12748685985 cubed (12748685985³) is 2072031112351223498764543046625
• The square root of 12748685985 is 112910.0792002203
• The cube root of 12748685985 is 2336.0841063875

Scales and comparisons

• 12,748,685,985 seconds is equal to 405 years, 19 weeks, 1 day, 5 hours, 39 minutes, 45 seconds.
• To count from 1 to 12,748,685,985 would take you about eight hundred ten 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 12748685985 cubic inches would be around 194.7 feet tall.

Recreational maths with 12748685985

• 12748685985 backwards is 58958684721
• 12748685985 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12748685985's digits is 63
• More coming soon!