20872139420

Names of 20872139420

• Cardinal: 20872139420 can be written as Twenty billion, eight hundred seventy-two million, one hundred thirty-nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.087213942 × 10¹⁰

Factors of 20872139420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4671

Divisors of 20872139420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 11 20 22 31 44 55 61 62 110 121 122 124 155 220 242 244 305 310 341 484 605 610 620 671 682 1210 1220 1342 1364 1705 1891 2420 2684 3355 3410 3751 3782 4561 6710 6820 7381 7502 7564 9122 9455 13420 14762 15004 18244 18755 18910 20801 22805 29524 36905 37510 37820 41602 45610 50171 73810 75020 83204 91220 100342 104005 141391 147620 200684 208010 228811 250855 278221 282782 416020 457622 501710 551881 556442 565564 706955 915244 1003420 1103762 1112884 1144055 1391105 1413910 1555301 2207524 2288110 2759405 2782210 2827820 3060431 3110602 4576220 5518810 5564420 6120862 6221204 7776505 8624851 11037620 12241724 15302155 15553010 17108311 17249702 30604310 31106020 33664741 34216622 34499404 43124255 61208620 67329482 68433244 85541555 86248510 94873361 134658964 168323705 171083110 172497020 189746722 336647410 342166220 379493444 474366805 673294820 948733610 1043606971 1897467220 2087213942 4174427884 5218034855 10436069710 20872139420
• Sum of all divisors σ(n): 50558930688
• Sum of proper divisors (its aliquot sum) s(n): 29686791268
• 20872139420 is an abundant number, because the sum of its proper divisors (29686791268) is greater than itself. Its abundance is 8814651848

Bases of 20872139420

• Binary: 10011011100000100111001001010011100₂
• Hexadecimal: 0x4DC13929C
• Base-36: 9L6QDUK

Squares and roots of 20872139420

• 20872139420 squared (20872139420²) is 435646203967917936400
• 20872139420 cubed (20872139420³) is 9092868307012140375659492888000
• The square root of 20872139420 is 144471.9329835383
• The cube root of 20872139420 is 2753.3134460603

Scales and comparisons

• 20,872,139,420 seconds is equal to 663 years, 34 weeks, 5 days, 16 hours, 30 minutes, 20 seconds.
• To count from 1 to 20,872,139,420 would take you about one thousand, three hundred twenty-seven 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 20872139420 cubic inches would be around 229.4 feet tall.

Recreational maths with 20872139420

• 20872139420 backwards is 02493127802
• The number of decimal digits it has is: 11
• The sum of 20872139420's digits is 38
• More coming soon!