821428979500212

Names of 821428979500212

• Cardinal: 821428979500212 can be written as Eight hundred twenty-one trillion, four hundred twenty-eight billion, nine hundred seventy-nine million, five hundred thousand, two hundred twelve.

Scientific notation

• Scientific notation: 8.21428979500212 × 10¹⁴

Factors of 821428979500212

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 293899638

Divisors of 821428979500212

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 12 89 178 267 356 534 1068 2617 5234 7851 10468 15702 31404 232913 465826 698739 931652 1397478 2794956 293896927 587793854 881690781 1175587708 1763381562 3526763124 26156826503 52313653006 78470479509 104627306012 156940959018 313881918036 769128257959 1538256515918 2307384773877 3076513031836 4614769547754 9229539095508 68452414958351 136904829916702 205357244875053 273809659833404 410714489750106 821428979500212
• Sum of all divisors σ(n): 1938943836910080
• Sum of proper divisors (its aliquot sum) s(n): 1117514857409868
• 821428979500212 is an abundant number, because the sum of its proper divisors (1117514857409868) is greater than itself. Its abundance is 296085877909656

Bases of 821428979500212

• Binary: 10111010110001010111010110100010000000010010110100₂
• Hexadecimal: 0x2EB15D68804B4
• Base-36: 83679HQ5RO

Squares and roots of 821428979500212

• 821428979500212 squared (821428979500212²) is 674745568362759706137308044944
• 821428979500212 cubed (821428979500212³) is 554255563642512237276581739293191163953528128
• The square root of 821428979500212 is 28660582.3300960163
• The cube root of 821428979500212 is 93653.3550348435

Scales and comparisons

• 821,428,979,500,212 seconds is equal to 26,118,900 years, 36 weeks, 3 days, 7 hours, 50 minutes, 12 seconds.
• To count from 1 to 821,428,979,500,212 would take you about sixty-five million, two hundred ninety-seven thousand, two hundred fifty-one 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 821428979500212 cubic inches would be around 7804.4 feet tall.

Recreational maths with 821428979500212

• 821428979500212 backwards is 212005979824128
• The number of decimal digits it has is: 15
• The sum of 821428979500212's digits is 60
• More coming soon!