28678921425

Names of 28678921425

• Cardinal: 28678921425 can be written as Twenty-eight billion, six hundred seventy-eight million, nine hundred twenty-one thousand, four hundred twenty-five.

Scientific notation

• Scientific notation: 2.8678921425 × 10¹⁰

Factors of 28678921425

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 467

Divisors of 28678921425

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 5 7 9 11 15 21 25 27 29 33 35 45 53 55 63 75 77 87 99 105 135 145 159 165 175 189 203 225 231 261 265 275 297 315 319 359 371 385 435 477 495 525 583 609 675 693 725 783 795 825 945 957 1015 1077 1113 1155 1305 1325 1431 1485 1537 1575 1595 1749 1795 1827 1855 1925 2079 2175 2233 2385 2475 2513 2871 2915 3045 3231 3339 3465 3915 3949 3975 4081 4611 4725 4785 5075 5247 5385 5481 5565 5775 6525 6699 7155 7425 7539 7685 7975 8613 8745 8975 9135 9275 9693 10017 10395 10411 10759 11165 11847 11925 12243 12565 13833 14355 14575 15225 15741 16155 16695 16907 17325 19027 19575 19745 20097 20405 22617 23055 23925 26235 26925 27405 27643 27825 31233 32277 33495 35541 35775 36729 37695 38425 41499 43065 43725 45675 48465 50085 50721 51975 52055 53795 55825 57081 59235 60291 61215 62825 67851 69165 71775 72877 78705 80775 82929 83475 84535 93699 95135 96831 98725 100485 102025 106623 110187 113085 114521 115275 118349 131175 133189 137025 138215 152163 156165 161385 167475 171243 177705 183645 188475 207495 209297 215325 218631 242325 248787 250425 253605 260275 268975 281097 285405 290493 296175 301455 306075 339255 343563 345825 355047 364385 393525 399567 414645 422675 456489 468495 475675 484155 502425 513729 533115 550935 551783 565425 572605 591745 627891 655893 665945 691075 746361 760815 780825 801647 806925 856215 888525 918225 1030689 1037475 1046485 1065141 1093155 1198701 1243935 1268025 1405485 1427025 1452465 1465079 1507275 1655349 1696275 1717815 1775235 1821925 1883673 1967679 1997835 2073225 2282445 2342475 2404941 2420775 2568645 2665575 2754675 2758915 2863025 2958725 3092067 3139455 3195423 3279465 3329725 3596103 3731805 3804075 3862481 4008235 4281075 4395237 4966047 5153445 5232425 5325705 5465775 5651019 5993505 6069613 6219675 7027425 7214823 7262325 7325395 8276745 8589075 8876175 9418365 9838395 9989175 11412225 11587443 12024705 12843225 13185711 13794575 14898141 15460335 15697275 15977115 16397325 17980515 18208839 18659025 19312405 20041175 21644469 21976185 24830235 25767225 26628525 28255095 29967525 30348065 34762329 36074115 36626975 39557133 41383725 42487291 47091825 49191975 54626517 57937215 60123525 65928555 74490705 77301675 79885575 89902575 91044195 96562025 104286987 108222345 109880925 124151175 127461873 141275475 151740325 163879551 173811645 180370575 197785665 212436455 273132585 289686075 329642775 372453525 382385619 455220975 521434935 541111725 637309365 819397755 869058225 988928325 1062182275 1147156857 1365662925 1911928095 2607174675 3186546825 4096988775 5735784285 9559640475 28678921425
• Sum of all divisors σ(n): 69424128000
• Sum of proper divisors (its aliquot sum) s(n): 40745206575
• 28678921425 is an abundant number, because the sum of its proper divisors (40745206575) is greater than itself. Its abundance is 12066285150

Bases of 28678921425

• Binary: 11010101101011001011001110011010001₂
• Hexadecimal: 0x6AD659CD1
• Base-36: D6AOTE9

Squares and roots of 28678921425

• 28678921425 squared (28678921425²) is 822480534101324030625
• 28678921425 cubed (28678921425³) is 23587854611083904862758668640625
• The square root of 28678921425 is 169348.5205869835
• The cube root of 28678921425 is 3060.9361562835

Scales and comparisons

• 28,678,921,425 seconds is equal to 911 years, 46 weeks, 5 days, 23 hours, 3 minutes, 45 seconds.
• To count from 1 to 28,678,921,425 would take you about one thousand, eight hundred twenty-three 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 28678921425 cubic inches would be around 255.1 feet tall.

Recreational maths with 28678921425

• 28678921425 backwards is 52412987682
• The number of decimal digits it has is: 11
• The sum of 28678921425's digits is 54
• More coming soon!