21440147472

Names of 21440147472

• Cardinal: 21440147472 can be written as Twenty-one billion, four hundred forty million, one hundred forty-seven thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1440147472 × 10¹⁰

Factors of 21440147472

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 36305

Divisors of 21440147472

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 1423 2846 4269 5692 8538 11384 12807 17076 22768 25614 34152 34877 38421 51228 68304 69754 76842 102456 104631 139508 153684 204912 209262 279016 307368 313893 418524 558032 614736 627786 837048 941679 1255572 1674096 1883358 2511144 3766716 5022288 7533432 15066864 49629971 99259942 148889913 198519884 297779826 397039768 446669739 595559652 794079536 893339478 1191119304 1340009217 1786678956 2382238608 2680018434 3573357912 5360036868 7146715824 10720073736 21440147472
• Sum of all divisors σ(n): 61586177280
• Sum of proper divisors (its aliquot sum) s(n): 40146029808
• 21440147472 is an abundant number, because the sum of its proper divisors (40146029808) is greater than itself. Its abundance is 18705882336

Bases of 21440147472

• Binary: 10011111101111011101011000000010000₂
• Hexadecimal: 0x4FDEEB010
• Base-36: 9UKWRO0

Squares and roots of 21440147472

• 21440147472 squared (21440147472²) is 459679923621107990784
• 21440147472 cubed (21440147472³) is 9855605352354251574446576898048
• The square root of 21440147472 is 146424.5453194239
• The cube root of 21440147472 is 2778.0661926953

Scales and comparisons

• 21,440,147,472 seconds is equal to 681 years, 37 weeks, 6 days, 20 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,440,147,472 would take you about one thousand, three hundred sixty-three 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 21440147472 cubic inches would be around 231.5 feet tall.

Recreational maths with 21440147472

• 21440147472 backwards is 27474104412
• 21440147472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21440147472's digits is 36
• More coming soon!