21355425144

Names of 21355425144

• Cardinal: 21355425144 can be written as Twenty-one billion, three hundred fifty-five million, four hundred twenty-five thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 2.1355425144 × 10¹⁰

Factors of 21355425144

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 5028

Divisors of 21355425144

• Number of divisors d(n): 104
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 243 324 486 648 729 972 1458 1944 2187 2916 4374 5023 5832 6561 8748 10046 13122 15069 17496 19683 20092 26244 30138 39366 40184 45207 52488 59049 60276 78732 90414 118098 120552 135621 157464 177147 180828 236196 271242 354294 361656 406863 472392 531441 542484 708588 813726 1062882 1084968 1220589 1417176 1627452 2125764 2441178 3254904 3661767 4251528 4882356 7323534 9764712 10985301 14647068 21970602 29294136 32955903 43941204 65911806 87882408 98867709 131823612 197735418 263647224 296603127 395470836 593206254 790941672 889809381 1186412508 1779618762 2372825016 2669428143 3559237524 5338856286 7118475048 10677712572 21355425144
• Sum of all divisors σ(n): 60074052960
• Sum of proper divisors (its aliquot sum) s(n): 38718627816
• 21355425144 is an abundant number, because the sum of its proper divisors (38718627816) is greater than itself. Its abundance is 17363202672

Bases of 21355425144

• Binary: 10011111000111000011110110101111000₂
• Hexadecimal: 0x4F8E1ED78
• Base-36: 9T6GVI0

Squares and roots of 21355425144

• 21355425144 squared (21355425144²) is 456054183080987420736
• 21355425144 cubed (21355425144³) is 9739230968394098153133281385984
• The square root of 21355425144 is 146134.9552434325
• The cube root of 21355425144 is 2774.4021175047

Scales and comparisons

• 21,355,425,144 seconds is equal to 679 years, 1 week, 6 days, 6 hours, 32 minutes, 24 seconds.
• To count from 1 to 21,355,425,144 would take you about one thousand, three hundred fifty-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 21355425144 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355425144

• 21355425144 backwards is 44152455312
• 21355425144 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21355425144's digits is 36
• More coming soon!