21014368640

Names of 21014368640

• Cardinal: 21014368640 can be written as Twenty-one billion, fourteen million, three hundred sixty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.101436864 × 10¹⁰

Factors of 21014368640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 36655

Divisors of 21014368640

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 919 1838 3676 4595 7352 9190 14704 18380 29408 35729 36760 58816 71458 73520 117632 142916 147040 178645 285832 294080 357290 571664 588160 714580 1143328 1429160 2286656 2858320 4573312 5716640 11433280 22866560 32834951 65669902 131339804 164174755 262679608 328349510 525359216 656699020 1050718432 1313398040 2101436864 2626796080 4202873728 5253592160 10507184320 21014368640
• Sum of all divisors σ(n): 50293548000
• Sum of proper divisors (its aliquot sum) s(n): 29279179360
• 21014368640 is an abundant number, because the sum of its proper divisors (29279179360) is greater than itself. Its abundance is 8264810720

Bases of 21014368640

• Binary: 10011100100100011011101000110000000₂
• Hexadecimal: 0x4E48DD180
• Base-36: 9NJEUM8

Squares and roots of 21014368640

• 21014368640 squared (21014368640²) is 441603689337815449600
• 21014368640 cubed (21014368640³) is 9280022720528891350181740544000
• The square root of 21014368640 is 144963.3355024643
• The cube root of 21014368640 is 2759.5532708323

Scales and comparisons

• 21,014,368,640 seconds is equal to 668 years, 9 weeks, 6 days, 20 hours, 37 minutes, 20 seconds.
• To count from 1 to 21,014,368,640 would take you about one thousand, three hundred thirty-six 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 21014368640 cubic inches would be around 230 feet tall.

Recreational maths with 21014368640

• 21014368640 backwards is 04686341012
• The number of decimal digits it has is: 11
• The sum of 21014368640's digits is 35
• More coming soon!