21201380907

Names of 21201380907

• Cardinal: 21201380907 can be written as Twenty-one billion, two hundred one million, three hundred eighty thousand, nine hundred seven.

Scientific notation

• Scientific notation: 2.1201380907 × 10¹⁰

Factors of 21201380907

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 185

Divisors of 21201380907

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 7 19 21 49 57 67 89 133 147 201 267 361 399 469 623 931 1083 1273 1407 1691 1869 2527 2793 3283 3819 4361 4489 5073 5963 7581 8911 9849 11837 13083 13467 17689 17889 24187 26733 31423 32129 35511 41741 53067 62377 72561 82859 85291 94269 96387 113297 125223 169309 187131 219961 224903 248577 255873 292187 339891 399521 507927 597037 659883 674709 793079 876561 1185163 1198563 1574321 1620529 1791111 2152643 2379237 2796647 3555489 4179259 4722963 4861587 5551553 6457929 7590899 8389941 11343703 12537777 15068501 16654659 19576529 22772697 34031109 45205503 53136293 58729587 79405921 105479507 144227081 159408879 238217763 316438521 371954051 432681243 1009589567 1115862153 3028768701 7067126969 21201380907
• Sum of all divisors σ(n): 35627172840
• Sum of proper divisors (its aliquot sum) s(n): 14425791933
• 21201380907 is a deficient number, because the sum of its proper divisors (14425791933) is less than itself. Its deficiency is 6775588974

Bases of 21201380907

• Binary: 10011101111101100110110011000101011₂
• Hexadecimal: 0x4EFB3662B
• Base-36: 9QMR67F

Squares and roots of 21201380907

• 21201380907 squared (21201380907²) is 449498552363704142649
• 21201380907 cubed (21201380907³) is 9529990025807976729755313002643
• The square root of 21201380907 is 145606.9397624989
• The cube root of 21201380907 is 2767.7150983455

Scales and comparisons

• 21,201,380,907 seconds is equal to 674 years, 7 weeks, 1 day, 8 hours, 28 minutes, 27 seconds.
• To count from 1 to 21,201,380,907 would take you about one thousand, three hundred forty-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 21201380907 cubic inches would be around 230.6 feet tall.

Recreational maths with 21201380907

• 21201380907 backwards is 70908310212
• The number of decimal digits it has is: 11
• The sum of 21201380907's digits is 33
• More coming soon!