668406492

Names of 668406492

• Cardinal: 668406492 can be written as Six hundred sixty-eight million, four hundred six thousand, four hundred ninety-two.

Scientific notation

• Scientific notation: 6.68406492 × 10⁸

Factors of 668406492

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 331

Divisors of 668406492

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 81 108 117 156 162 169 234 243 313 324 338 351 468 486 507 626 676 702 939 972 1014 1053 1252 1404 1521 1878 2028 2106 2197 2817 3042 3159 3756 4069 4212 4394 4563 5634 6084 6318 6591 8138 8451 8788 9126 11268 12207 12636 13182 13689 16276 16902 18252 19773 24414 25353 26364 27378 33804 36621 39546 41067 48828 50706 52897 54756 59319 73242 76059 79092 82134 101412 105794 109863 118638 146484 152118 158691 164268 177957 211588 219726 237276 304236 317382 329589 355914 439452 476073 533871 634764 659178 687661 711828 952146 988767 1067742 1318356 1375322 1428219 1904292 1977534 2062983 2135484 2750644 2856438 3955068 4125966 4284657 5712876 6188949 8251932 8569314 12377898 12853971 17138628 18566847 24755796 25707942 37133694 51415884 55700541 74267388 111401082 167101623 222802164 334203246 668406492
• Sum of all divisors σ(n): 1904171360
• Sum of proper divisors (its aliquot sum) s(n): 1235764868
• 668406492 is an abundant number, because the sum of its proper divisors (1235764868) is greater than itself. Its abundance is 567358376

Bases of 668406492

• Binary: 100111110101110001001011011100₂
• Hexadecimal: 0x27D712DC
• Base-36: B1Y9R0

Squares and roots of 668406492

• 668406492 squared (668406492²) is 446767238547746064
• 668406492 cubed (668406492³) is 298622122658226121145047488
• The square root of 668406492 is 25853.5585945147
• The cube root of 668406492 is 874.3397433245

Scales and comparisons

• 668,406,492 seconds is equal to 21 years, 13 weeks, 1 day, 4 hours, 28 minutes, 12 seconds.
• To count from 1 to 668,406,492 would take you about thirty-one 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 668406492 cubic inches would be around 72.9 feet tall.

Recreational maths with 668406492

• 668406492 backwards is 294604866
• The number of decimal digits it has is: 9
• The sum of 668406492's digits is 45
• More coming soon!