168438398720

Names of 168438398720

• Cardinal: 168438398720 can be written as One hundred sixty-eight billion, four hundred thirty-eight million, three hundred ninety-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.6843839872 × 10¹¹

Factors of 168438398720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 301176

Divisors of 168438398720

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 23 32 38 40 46 64 76 80 92 95 115 128 152 160 184 190 230 256 304 320 368 380 437 460 608 640 736 760 874 920 1216 1280 1472 1520 1748 1840 2185 2432 2944 3040 3496 3680 4370 4864 5888 6080 6992 7360 8740 12160 13984 14720 17480 24320 27968 29440 34960 55936 69920 111872 139840 279680 301127 559360 602254 1204508 1505635 2409016 3011270 4818032 5721413 6022540 6925921 9636064 11442826 12045080 13851842 19272128 22885652 24090160 27703684 28607065 34629605 38544256 45771304 48180320 55407368 57214130 69259210 77088512 91542608 96360640 110814736 114428260 131592499 138518420 183085216 192721280 221629472 228856520 263184998 277036840 366170432 385442560 443258944 457713040 526369996 554073680 657962495 732340864 886517888 915426080 1052739992 1108147360 1315924990 1464681728 1773035776 1830852160 2105479984 2216294720 2631849980 3661704320 4210959968 4432589440 5263699960 7323408640 8421919936 8865178880 10527399920 16843839872 21054799840 33687679744 42109599680 84219199360 168438398720
• Sum of all divisors σ(n): 443164055040
• Sum of proper divisors (its aliquot sum) s(n): 274725656320
• 168438398720 is an abundant number, because the sum of its proper divisors (274725656320) is greater than itself. Its abundance is 106287257600

Bases of 168438398720

• Binary: 10011100110111101101011111111100000000₂
• Hexadecimal: 0x2737B5FF00
• Base-36: 25DNVG8W

Squares and roots of 168438398720

• 168438398720 squared (168438398720²) is 28371494163357697638400
• 168438398720 cubed (168438398720³) is 4778849046169796688798021582848000
• The square root of 168438398720 is 410412.4738845057
• The cube root of 168438398720 is 5522.6438220975

Scales and comparisons

• 168,438,398,720 seconds is equal to 5,355 years, 42 weeks, 4 days, 12 hours, 5 minutes, 20 seconds.
• To count from 1 to 168,438,398,720 would take you about ten thousand, seven hundred eleven 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 168438398720 cubic inches would be around 460.2 feet tall.

Recreational maths with 168438398720

• 168438398720 backwards is 027893834861
• The number of decimal digits it has is: 12
• The sum of 168438398720's digits is 59
• More coming soon!