21047671429840

Names of 21047671429840

• Cardinal: 21047671429840 can be written as Twenty-one trillion, forty-seven billion, six hundred seventy-one million, four hundred twenty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.104767142984 × 10¹³

Factors of 21047671429840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 23917808461

Divisors of 21047671429840

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 23917808443 47835616886 95671233772 119589042215 191342467544 239178084430 263095892873 382684935088 478356168860 526191785746 956712337720 1052383571492 1315479464365 1913424675440 2104767142984 2630958928730 4209534285968 5261917857460 10523835714920 21047671429840
• Sum of all divisors σ(n): 53384548447008
• Sum of proper divisors (its aliquot sum) s(n): 32336877017168
• 21047671429840 is an abundant number, because the sum of its proper divisors (32336877017168) is greater than itself. Its abundance is 11289205587328

Bases of 21047671429840

• Binary: 100110010010010001010111110101001101011010000₂
• Hexadecimal: 0x13248AFA9AD0
• Base-36: 7GL604UDS

Squares and roots of 21047671429840

• 21047671429840 squared (21047671429840²) is 443004472618502990042425600
• 21047671429840 cubed (21047671429840³) is 9324212581623801957266575310613819904000
• The square root of 21047671429840 is 4587774.1258523179
• The cube root of 21047671429840 is 27610.1024724519

Scales and comparisons

• 21,047,671,429,840 seconds is equal to 669,250 years, 44 weeks, 5 hours, 10 minutes, 40 seconds.
• To count from 1 to 21,047,671,429,840 would take you about one million, six hundred seventy-three thousand, one hundred twenty-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 21047671429840 cubic inches would be around 2300.8 feet tall.

Recreational maths with 21047671429840

• 21047671429840 backwards is 04892417674012
• 21047671429840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21047671429840's digits is 55
• More coming soon!