3989388720

Names of 3989388720

• Cardinal: 3989388720 can be written as Three billion, nine hundred eighty-nine million, three hundred eighty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 3.98938872 × 10⁹

Factors of 3989388720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 71584

Divisors of 3989388720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 233 240 466 699 932 1165 1398 1864 2330 2796 3495 3728 4660 5592 6990 9320 11184 13980 18640 27960 55920 71341 142682 214023 285364 356705 428046 570728 713410 856092 1070115 1141456 1426820 1712184 2140230 2853640 3424368 4280460 5707280 8560920 16622453 17121840 33244906 49867359 66489812 83112265 99734718 132979624 166224530 199469436 249336795 265959248 332449060 398938872 498673590 664898120 797877744 997347180 1329796240 1994694360 3989388720
• Sum of all divisors σ(n): 12420356832
• Sum of proper divisors (its aliquot sum) s(n): 8430968112
• 3989388720 is an abundant number, because the sum of its proper divisors (8430968112) is greater than itself. Its abundance is 4441579392

Bases of 3989388720

• Binary: 11101101110010010011110110110000₂
• Hexadecimal: 0xEDC93DB0
• Base-36: 1TZ6G1C

Squares and roots of 3989388720

• 3989388720 squared (3989388720²) is 15915222359263238400
• 3989388720 cubed (3989388720³) is 63492008556336550783630848000
• The square root of 3989388720 is 63161.6079592659
• The cube root of 3989388720 is 1585.9961124647

Scales and comparisons

• 3,989,388,720 seconds is equal to 126 years, 44 weeks, 1 day, 11 hours, 32 minutes.
• To count from 1 to 3,989,388,720 would take you about two hundred fifty-three 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 3989388720 cubic inches would be around 132.2 feet tall.

Recreational maths with 3989388720

• 3989388720 backwards is 0278839893
• The number of decimal digits it has is: 10
• The sum of 3989388720's digits is 57
• More coming soon!