21395757376

Names of 21395757376

• Cardinal: 21395757376 can be written as Twenty-one billion, three hundred ninety-five million, seven hundred fifty-seven thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 2.1395757376 × 10¹⁰

Factors of 21395757376

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 47758396

Divisors of 21395757376

• Number of divisors d(n): 28
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 112 224 448 47758387 95516774 191033548 334308709 382067096 668617418 764134192 1337234836 1528268384 2674469672 3056536768 5348939344 10697878688 21395757376
• Sum of all divisors σ(n): 48522522208
• Sum of proper divisors (its aliquot sum) s(n): 27126764832
• 21395757376 is an abundant number, because the sum of its proper divisors (27126764832) is greater than itself. Its abundance is 5731007456

Bases of 21395757376

• Binary: 10011111011010010010101100101000000₂
• Hexadecimal: 0x4FB495940
• Base-36: 9TUHC1S

Squares and roots of 21395757376

• 21395757376 squared (21395757376²) is 457778433692658405376
• 21395757376 cubed (21395757376³) is 9794516299253422993871950053376
• The square root of 21395757376 is 146272.8866741885
• The cube root of 21395757376 is 2776.1476140059

Scales and comparisons

• 21,395,757,376 seconds is equal to 680 years, 16 weeks, 4 days, 1 hour, 56 minutes, 16 seconds.
• To count from 1 to 21,395,757,376 would take you about one thousand, three hundred sixty 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 21395757376 cubic inches would be around 231.3 feet tall.

Recreational maths with 21395757376

• 21395757376 backwards is 67375759312
• The number of decimal digits it has is: 11
• The sum of 21395757376's digits is 55
• More coming soon!