20745998640

Names of 20745998640

• Cardinal: 20745998640 can be written as Twenty billion, seven hundred forty-five million, nine hundred ninety-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.074599864 × 10¹⁰

Factors of 20745998640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2938

Divisors of 20745998640

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 127 135 144 162 180 216 240 243 254 270 324 360 381 405 432 486 508 540 635 648 720 729 762 810 972 1016 1080 1143 1215 1270 1296 1458 1524 1620 1905 1944 2032 2160 2286 2430 2540 2801 2916 3048 3240 3429 3645 3810 3888 4572 4860 5080 5602 5715 5832 6096 6480 6858 7290 7620 8403 9144 9720 10160 10287 11204 11430 11664 13716 14005 14580 15240 16806 17145 18288 19440 20574 22408 22860 25209 27432 28010 29160 30480 30861 33612 34290 41148 42015 44816 45720 50418 51435 54864 56020 58320 61722 67224 68580 75627 82296 84030 91440 92583 100836 102870 112040 123444 126045 134448 137160 151254 154305 164592 168060 185166 201672 205740 224080 226881 246888 252090 274320 302508 308610 336120 355727 370332 378135 403344 411480 453762 462915 493776 504180 605016 617220 672240 680643 711454 740664 756270 822960 907524 925830 1008360 1067181 1134405 1210032 1234440 1361286 1422908 1481328 1512540 1778635 1815048 1851660 2016720 2041929 2134362 2268810 2468880 2722572 2845816 3025080 3201543 3403215 3557270 3630096 3703320 4083858 4268724 4537620 5335905 5445144 5691632 6050160 6403086 6806430 7114540 7406640 8167716 8537448 9075240 9604629 10209645 10671810 10890288 12806172 13612860 14229080 16007715 16335432 17074896 18150480 19209258 20419290 21343620 25612344 27225720 28458160 28813887 32015430 32670864 38418516 40838580 42687240 48023145 51224688 54451440 57627774 64030860 76837032 81677160 85374480 86441661 96046290 115255548 128061720 144069435 153674064 163354320 172883322 192092580 230511096 256123440 259324983 288138870 345766644 384185160 432208305 461022192 518649966 576277740 691533288 768370320 864416610 1037299932 1152555480 1296624915 1383066576 1728833220 2074599864 2305110960 2593249830 3457666440 4149199728 5186499660 6915332880 10372999320 20745998640
• Sum of all divisors σ(n): 72914047488
• Sum of proper divisors (its aliquot sum) s(n): 52168048848
• 20745998640 is an abundant number, because the sum of its proper divisors (52168048848) is greater than itself. Its abundance is 31422050208

Bases of 20745998640

• Binary: 10011010100100011101101000100110000₂
• Hexadecimal: 0x4D48ED130
• Base-36: 9J3MR00

Squares and roots of 20745998640

• 20745998640 squared (20745998640²) is 430396459570881849600
• 20745998640 cubed (20745998640³) is 8929004364918329835402284544000
• The square root of 20745998640 is 144034.7133159227
• The cube root of 20745998640 is 2747.7556846923

Scales and comparisons

• 20,745,998,640 seconds is equal to 659 years, 34 weeks, 1 day, 17 hours, 24 minutes.
• To count from 1 to 20,745,998,640 would take you about one thousand, three hundred nineteen 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 20745998640 cubic inches would be around 229 feet tall.

Recreational maths with 20745998640

• 20745998640 backwards is 04689954702
• 20745998640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20745998640's digits is 54
• More coming soon!