21128327292690

Names of 21128327292690

• Cardinal: 21128327292690 can be written as Twenty-one trillion, one hundred twenty-eight billion, three hundred twenty-seven million, two hundred ninety-two thousand, six hundred ninety.

Scientific notation

• Scientific notation: 2.112832729269 × 10¹³

Factors of 21128327292690

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5278418

Divisors of 21128327292690

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 14867 29734 44601 74335 89202 133803 148670 223005 267606 401409 446010 669015 802818 1338030 2007045 4014090 5263541 10527082 15790623 26317705 31581246 47371869 52635410 78953115 94743738 142115607 157906230 236859345 284231214 473718690 710578035 1421156070 78253064047 156506128094 234759192141 391265320235 469518384282 704277576423 782530640470 1173795960705 1408555152846 2112832729269 2347591921410 3521387882115 4225665458538 7042775764230 10564163646345 21128327292690
• Sum of all divisors σ(n): 56346006568320
• Sum of proper divisors (its aliquot sum) s(n): 35217679275630
• 21128327292690 is an abundant number, because the sum of its proper divisors (35217679275630) is greater than itself. Its abundance is 14089351982940

Bases of 21128327292690

• Binary: 100110011011101010010011100010110011100010010₂
• Hexadecimal: 0x133752716712
• Base-36: 7HM7WJWGI

Squares and roots of 21128327292690

• 21128327292690 squared (21128327292690²) is 446406214187029144927436100
• 21128327292690 cubed (21128327292690³) is 9431816598834225762958821621215972109000
• The square root of 21128327292690 is 4596556.0251877709
• The cube root of 21128327292690 is 27645.3253414747

Scales and comparisons

• 21,128,327,292,690 seconds is equal to 671,815 years, 23 weeks, 4 days, 3 hours, 31 minutes, 30 seconds.
• To count from 1 to 21,128,327,292,690 would take you about one million, six hundred seventy-nine thousand, five hundred thirty-eight 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 21128327292690 cubic inches would be around 2303.8 feet tall.

Recreational maths with 21128327292690

• 21128327292690 backwards is 09629272382112
• 21128327292690 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21128327292690's digits is 54
• More coming soon!