28790971209

Names of 28790971209

• Cardinal: 28790971209 can be written as Twenty-eight billion, seven hundred ninety million, nine hundred seventy-one thousand, two hundred nine.

Scientific notation

• Scientific notation: 2.8790971209 × 10¹⁰

Factors of 28790971209

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 528

Divisors of 28790971209

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 7 9 11 13 21 27 33 37 39 49 63 77 81 91 99 111 117 143 147 189 231 243 259 273 297 333 351 407 429 441 457 481 539 567 637 693 777 819 891 999 1001 1053 1221 1287 1323 1371 1443 1617 1701 1813 1911 2079 2331 2457 2673 2849 2997 3003 3159 3199 3367 3663 3861 3969 4113 4329 4851 5027 5291 5439 5733 5941 6237 6993 7007 7371 8547 8991 9009 9597 10101 10989 11583 11907 12339 12987 14553 15081 15873 16317 16909 17199 17823 18711 19943 20979 21021 22113 22393 23569 25641 27027 28791 30303 32967 34749 35189 37017 37037 38961 41587 43659 45243 47619 48951 50727 51597 53469 59829 62937 63063 65351 67179 70707 76923 81081 86373 90909 98901 105567 111051 111111 116883 118363 124761 130977 135729 142857 146853 152181 154791 160407 179487 185999 189189 196053 201537 212121 219817 230769 243243 246323 259119 259259 272727 291109 316701 333333 355089 374283 407187 428571 440559 456543 457457 481221 538461 557997 567567 588159 604611 636363 659451 692307 738969 777357 777777 818181 828541 873327 950103 999999 1065267 1122849 1221561 1285713 1301993 1369629 1372371 1443663 1538719 1615383 1673991 1702701 1764477 1813833 1909089 1978353 2216907 2333331 2417987 2485623 2619981 2850309 2999997 3195801 3202199 3368547 3905979 4108887 4117113 4616157 4846149 5021973 5293431 5441499 5727267 5935059 6650721 6999993 7253961 7456869 7859943 8550927 8999991 9113951 9587403 9606597 10105641 10771033 11717937 12351339 13848471 15065919 15880293 16925909 17805177 19952163 20999979 21761883 22370607 23579829 27341853 28762209 28819791 32313099 35153811 37054017 41545413 45197757 50777727 53415531 59856489 62999937 65285649 67111821 70739487 82025559 86459373 96939297 105461433 111162051 118481363 124636239 152333181 195856947 201335463 246076677 259378119 290817891 316384299 355444089 373908717 456999543 587570841 738230031 778134357 872453673 1066332267 1370998629 2214690093 2617361019 3198996801 4112995887 9596990403 28790971209
• Sum of all divisors σ(n): 60664496256
• Sum of proper divisors (its aliquot sum) s(n): 31873525047
• 28790971209 is an abundant number, because the sum of its proper divisors (31873525047) is greater than itself. Its abundance is 3082553838

Bases of 28790971209

• Binary: 11010110100000100110101101101001001₂
• Hexadecimal: 0x6B4135B49
• Base-36: D85EFK9

Squares and roots of 28790971209

• 28790971209 squared (28790971209²) is 828920023157466921681
• 28790971209 cubed (28790971209³) is 23865412521290243415487528882329
• The square root of 28790971209 is 169679.0240689755
• The cube root of 28790971209 is 3064.9173790717

Scales and comparisons

• 28,790,971,209 seconds is equal to 915 years, 24 weeks, 20 hours, 9 seconds.
• To count from 1 to 28,790,971,209 would take you about one thousand, eight hundred thirty 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 28790971209 cubic inches would be around 255.4 feet tall.

Recreational maths with 28790971209

• 28790971209 backwards is 90217909782
• The number of decimal digits it has is: 11
• The sum of 28790971209's digits is 54
• More coming soon!