16128421491

Names of 16128421491

• Cardinal: 16128421491 can be written as Sixteen billion, one hundred twenty-eight million, four hundred twenty-one thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.6128421491 × 10¹⁰

Factors of 16128421491

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 185

Divisors of 16128421491

• Number of divisors d(n): 256
• Complete list of divisors:
  1 3 7 13 19 21 23 31 39 49 57 69 89 91 93 133 147 161 217 247 267 273 299 343 399 403 437 483 589 623 637 651 713 741 897 931 1029 1127 1157 1209 1311 1519 1691 1729 1767 1869 1911 2047 2093 2139 2759 2793 2821 3059 3381 3471 4123 4361 4459 4557 4991 5073 5187 5681 6141 6279 6517 7657 7889 8099 8277 8463 9177 9269 10633 11837 12103 12369 13083 13377 13547 14329 14651 14973 17043 19313 19551 19747 21413 21983 22971 23667 24297 26611 27807 28861 30527 31899 34937 35511 35867 36309 38893 39767 40641 42987 43953 52421 53599 56693 57939 59241 63457 64239 64883 65949 79833 82859 84721 86583 91581 94829 100303 102557 104811 107601 116679 119301 135191 138229 149891 153881 157263 160797 170079 176111 186277 190371 194649 202027 244559 248577 251069 254163 272251 278369 284487 300909 307671 366947 375193 396851 405573 414687 444199 449673 454181 461643 505609 528333 558831 580013 606081 663803 681473 702121 733677 753207 816753 824941 835107 946337 1077167 1100841 1125579 1190553 1205683 1232777 1303939 1332597 1362543 1516827 1740039 1757483 1905757 1948583 1991409 2044419 2106363 2474823 2568629 2626351 2839011 3109393 3179267 3231501 3539263 3617049 3698331 3911817 4646621 4770311 5272449 5717271 5774587 5845749 7540169 7705887 7879053 8439781 8629439 9127573 9328179 9537801 10617789 12302381 13340299 13939863 14310933 15673879 17323761 17980403 21765751 22620507 24774841 25319343 25888317 27382719 33392177 36907143 40020897 40422109 47021637 53941209 59078467 60406073 65297253 74324523 100176531 109717153 121266327 173423887 177235401 181218219 233745239 282954763 329151459 413549269 520271661 701235717 768020071 848864289 1240647807 2304060213 5376140497 16128421491
• Sum of all divisors σ(n): 30965760000
• Sum of proper divisors (its aliquot sum) s(n): 14837338509
• 16128421491 is a deficient number, because the sum of its proper divisors (14837338509) is less than itself. Its deficiency is 1291082982

Bases of 16128421491

• Binary: 1111000001010101000010111001110011₂
• Hexadecimal: 0x3C1542E73
• Base-36: 7EQG1O3

Squares and roots of 16128421491

• 16128421491 squared (16128421491²) is 260125979791350663081
• 16128421491 cubed (16128421491³) is 4195421442834251730352700673771
• The square root of 16128421491 is 126997.7223850885
• The cube root of 16128421491 is 2526.5658485327

Scales and comparisons

• 16,128,421,491 seconds is equal to 512 years, 43 weeks, 2 days, 13 hours, 4 minutes, 51 seconds.
• To count from 1 to 16,128,421,491 would take you about one thousand and twenty-five 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 16128421491 cubic inches would be around 210.5 feet tall.

Recreational maths with 16128421491

• 16128421491 backwards is 19412482161
• 16128421491 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 16128421491's digits is 39
• More coming soon!