398394156820

Names of 398394156820

• Cardinal: 398394156820 can be written as Three hundred ninety-eight billion, three hundred ninety-four million, one hundred fifty-six thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 3.9839415682 × 10¹¹

Factors of 398394156820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2392958

Divisors of 398394156820

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 10 11 20 22 44 55 110 220 757 1514 3028 3785 7570 8327 15140 16654 33308 41635 83270 166540 2392183 4784366 9568732 11960915 23921830 26314013 47843660 52628026 105256052 131570065 263140130 526280260 1810882531 3621765062 7243530124 9054412655 18108825310 19919707841 36217650620 39839415682 79678831364 99598539205 199197078410 398394156820
• Sum of all divisors σ(n): 913890837888
• Sum of proper divisors (its aliquot sum) s(n): 515496681068
• 398394156820 is an abundant number, because the sum of its proper divisors (515496681068) is greater than itself. Its abundance is 117102524248

Bases of 398394156820

• Binary: 101110011000010001001000110011100010100₂
• Hexadecimal: 0x5CC2246714
• Base-36: 530PLES4

Squares and roots of 398394156820

• 398394156820 squared (398394156820²) is 158717904188318752512400
• 398394156820 cubed (398394156820³) is 63232285611342795900571854594568000
• The square root of 398394156820 is 631184.7247993253
• The cube root of 398394156820 is 7358.1898117185

Scales and comparisons

• 398,394,156,820 seconds is equal to 12,667 years, 36 weeks, 3 days, 11 hours, 33 minutes, 40 seconds.
• To count from 1 to 398,394,156,820 would take you about twenty-five thousand, three hundred thirty-five 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 398394156820 cubic inches would be around 613.2 feet tall.

Recreational maths with 398394156820

• 398394156820 backwards is 028651493893
• The number of decimal digits it has is: 12
• The sum of 398394156820's digits is 58
• More coming soon!