821421109047

Names of 821421109047

• Cardinal: 821421109047 can be written as Eight hundred twenty-one billion, four hundred twenty-one million, one hundred nine thousand and forty-seven.

Scientific notation

• Scientific notation: 8.21421109047 × 10¹¹

Factors of 821421109047

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 7810

Divisors of 821421109047

• Number of divisors d(n): 100
• Complete list of divisors:
  1 3 7 11 21 33 49 77 121 147 231 343 363 539 847 1029 1331 1617 2401 2541 3773 3993 5929 7203 7789 9317 11319 14641 17787 23367 26411 27951 41503 43923 54523 65219 79233 85679 102487 124509 163569 195657 257037 290521 307461 381661 456533 599753 717409 871563 942469 1144983 1369599 1799259 2152227 2671627 2827407 3195731 4198271 5021863 6597283 8014881 9587193 10367159 12594813 15065589 18701389 19791849 29387897 31101477 35153041 46180981 56104167 72570113 88163691 105459123 114038749 138542943 205715279 217710339 323266867 342116247 507990791 617145837 798271243 969800601 1523972373 2262868069 2394813729 3555935537 5587898701 6788604207 10667806611 16763696103 24891548759 39115290907 74674646277 117345872721 273807036349 821421109047
• Sum of all divisors σ(n): 1405630871800
• Sum of proper divisors (its aliquot sum) s(n): 584209762753
• 821421109047 is a deficient number, because the sum of its proper divisors (584209762753) is less than itself. Its deficiency is 237211346294

Bases of 821421109047

• Binary: 1011111101000000100000110110111100110111₂
• Hexadecimal: 0xBF40836F37
• Base-36: AHCSX453

Squares and roots of 821421109047

• 821421109047 squared (821421109047²) is 674732638388003465248209
• 821421109047 cubed (821421109047³) is 554239632134882212724262959910446823
• The square root of 821421109047 is 906322.8503392155
• The cube root of 821421109047 is 9365.3055923287

Scales and comparisons

• 821,421,109,047 seconds is equal to 26,118 years, 33 weeks, 5 days, 18 hours, 17 minutes, 27 seconds.
• To count from 1 to 821,421,109,047 would take you about fifty-two thousand, two hundred thirty-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 821421109047 cubic inches would be around 780.4 feet tall.

Recreational maths with 821421109047

• 821421109047 backwards is 740901124128
• The number of decimal digits it has is: 12
• The sum of 821421109047's digits is 39
• More coming soon!