21997076409

Names of 21997076409

• Cardinal: 21997076409 can be written as Twenty-one billion, nine hundred ninety-seven million, seventy-six thousand, four hundred nine.

Scientific notation

• Scientific notation: 2.1997076409 × 10¹⁰

Factors of 21997076409

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1484

Divisors of 21997076409

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 11 21 33 63 77 99 113 231 257 339 693 771 791 1017 1093 1243 1799 2313 2373 2827 3279 3729 5397 7119 7651 8481 8701 9837 11187 12023 16191 19789 22953 25443 26103 29041 36069 59367 68859 78309 84161 87123 108207 123509 178101 203287 252483 261369 280901 319451 370527 609861 757449 842703 864563 958353 1111581 1358599 1829583 1966307 2236157 2528109 2593689 2875059 3089911 4075797 5898921 6708471 7781067 9269733 9510193 12227391 17696763 20125413 21629377 27809199 28530579 31741813 64888131 85591737 95225439 194664393 222192691 285676317 349159943 666578073 1047479829 1999734219 2444119601 3142439487 7332358803 21997076409
• Sum of all divisors σ(n): 40156556544
• Sum of proper divisors (its aliquot sum) s(n): 18159480135
• 21997076409 is a deficient number, because the sum of its proper divisors (18159480135) is less than itself. Its deficiency is 3837596274

Bases of 21997076409

• Binary: 10100011111001000001011111110111001₂
• Hexadecimal: 0x51F20BFB9
• Base-36: A3SHOS9

Squares and roots of 21997076409

• 21997076409 squared (21997076409²) is 483871370543384335281
• 21997076409 cubed (21997076409³) is 10643755509970377072629831485929
• The square root of 21997076409 is 148314.1139912179
• The cube root of 21997076409 is 2801.9152036875

Scales and comparisons

• 21,997,076,409 seconds is equal to 699 years, 22 weeks, 5 days, 19 hours, 9 seconds.
• To count from 1 to 21,997,076,409 would take you about one thousand, three hundred ninety-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 21997076409 cubic inches would be around 233.5 feet tall.

Recreational maths with 21997076409

• 21997076409 backwards is 90467079912
• The number of decimal digits it has is: 11
• The sum of 21997076409's digits is 54
• More coming soon!