640297305472

Names of 640297305472

• Cardinal: 640297305472 can be written as Six hundred forty billion, two hundred ninety-seven million, three hundred five thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 6.40297305472 × 10¹¹

Factors of 640297305472

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 782

Divisors of 640297305472

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 64 88 128 176 352 704 769 1408 1538 3076 6152 8459 12304 16918 24608 33836 49216 67672 98432 135344 270688 541376 591361 1082752 1182722 2365444 4730888 6504971 9461776 13009942 18923552 26019884 37847104 52039768 75694208 104079536 208159072 416318144 454756609 832636288 909513218 1819026436 3638052872 5002322699 7276105744 10004645398 14552211488 20009290796 29104422976 40018581592 58208845952 80037163184 160074326368 320148652736 640297305472
• Sum of all divisors σ(n): 1393367144400
• Sum of proper divisors (its aliquot sum) s(n): 753069838928
• 640297305472 is an abundant number, because the sum of its proper divisors (753069838928) is greater than itself. Its abundance is 112772533456

Bases of 640297305472

• Binary: 1001010100010100101100011000010110000000₂
• Hexadecimal: 0x9514B18580
• Base-36: 865CHEV4

Squares and roots of 640297305472

• 640297305472 squared (640297305472²) is 409980639394703681142784
• 640297305472 cubed (640297305472³) is 262509498700116460103604052896514048
• The square root of 640297305472 is 800185.7943452883
• The cube root of 640297305472 is 8619.0729810959

Scales and comparisons

• 640,297,305,472 seconds is equal to 20,359 years, 24 weeks, 4 days, 10 hours, 37 minutes, 52 seconds.
• To count from 1 to 640,297,305,472 would take you about forty thousand, seven hundred eighteen 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 640297305472 cubic inches would be around 718.3 feet tall.

Recreational maths with 640297305472

• 640297305472 backwards is 274503792046
• The number of decimal digits it has is: 12
• The sum of 640297305472's digits is 49
• More coming soon!