78427203420

Names of 78427203420

• Cardinal: 78427203420 can be written as Seventy-eight billion, four hundred twenty-seven million, two hundred three thousand, four hundred twenty.

Scientific notation

• Scientific notation: 7.842720342 × 10¹⁰

Factors of 78427203420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 31881028

Divisors of 78427203420

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 41 60 82 123 164 205 246 410 492 615 820 1230 2460 31880977 63761954 95642931 127523908 159404885 191285862 318809770 382571724 478214655 637619540 956429310 1307120057 1912858620 2614240114 3921360171 5228480228 6535600285 7842720342 13071200570 15685440684 19606800855 26142401140 39213601710 78427203420
• Sum of all divisors σ(n): 224952180768
• Sum of proper divisors (its aliquot sum) s(n): 146524977348
• 78427203420 is an abundant number, because the sum of its proper divisors (146524977348) is greater than itself. Its abundance is 68097773928

Bases of 78427203420

• Binary: 1001001000010101000000010011101011100₂
• Hexadecimal: 0x1242A0275C
• Base-36: 1011J5GC

Squares and roots of 78427203420

• 78427203420 squared (78427203420²) is 6150826236282059696400
• 78427203420 cubed (78427203420³) is 482392100433966080306146241688000
• The square root of 78427203420 is 280048.5733225577
• The cube root of 78427203420 is 4280.4448874457

Scales and comparisons

• 78,427,203,420 seconds is equal to 2,493 years, 38 weeks, 4 days, 6 hours, 17 minutes.
• To count from 1 to 78,427,203,420 would take you about four thousand, nine hundred eighty-seven 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 78427203420 cubic inches would be around 356.7 feet tall.

Recreational maths with 78427203420

• 78427203420 backwards is 02430272487
• The number of decimal digits it has is: 11
• The sum of 78427203420's digits is 39
• More coming soon!