390239890668

Names of 390239890668

• Cardinal: 390239890668 can be written as Three hundred ninety billion, two hundred thirty-nine million, eight hundred ninety thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 3.90239890668 × 10¹¹

Factors of 390239890668

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 6684

Divisors of 390239890668

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 324 486 729 972 1458 2187 2916 4374 6679 8748 13358 20037 26716 40074 60111 80148 120222 180333 240444 360666 540999 721332 1081998 1622997 2163996 3245994 4868991 6491988 9737982 14606973 19475964 29213946 44609041 58427892 89218082 133827123 178436164 267654246 401481369 535308492 802962738 1204444107 1605925476 2408888214 3613332321 4817776428 7226664642 10839996963 14453329284 21679993926 32519990889 43359987852 65039981778 97559972667 130079963556 195119945334 390239890668
• Sum of all divisors σ(n): 1024376954160
• Sum of proper divisors (its aliquot sum) s(n): 634137063492
• 390239890668 is an abundant number, because the sum of its proper divisors (634137063492) is greater than itself. Its abundance is 243897172824

Bases of 390239890668

• Binary: 101101011011100000111000010110011101100₂
• Hexadecimal: 0x5ADC1C2CEC
• Base-36: 4Z9UR6R0

Squares and roots of 390239890668

• 390239890668 squared (390239890668²) is 152287172268572593486224
• 390239890668 cubed (390239890668³) is 59428529456226650414485262724157632
• The square root of 390239890668 is 624691.8365626367
• The cube root of 390239890668 is 7307.6412804097

Scales and comparisons

• 390,239,890,668 seconds is equal to 12,408 years, 21 weeks, 6 days, 9 hours, 37 minutes, 48 seconds.
• To count from 1 to 390,239,890,668 would take you about twenty-four thousand, eight hundred sixteen 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 390239890668 cubic inches would be around 609 feet tall.

Recreational maths with 390239890668

• 390239890668 backwards is 866098932093
• The number of decimal digits it has is: 12
• The sum of 390239890668's digits is 63
• More coming soon!