21311472270

Names of 21311472270

• Cardinal: 21311472270 can be written as Twenty-one billion, three hundred eleven million, four hundred seventy-two thousand, two hundred seventy.

Scientific notation

• Scientific notation: 2.131147227 × 10¹⁰

Factors of 21311472270

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2444

Divisors of 21311472270

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 5 6 10 11 15 22 30 33 55 66 110 121 165 242 330 363 605 726 1210 1815 2423 3630 4846 7269 12115 14538 24230 26653 36345 53306 72690 79959 133265 159918 266530 293183 399795 586366 799590 879549 1465915 1759098 2931830 4397745 5870929 8795490 11741858 17612787 29354645 35225574 58709290 64580219 88063935 129160438 176127870 193740657 322901095 387481314 645802190 710382409 968703285 1420764818 1937406570 2131147227 3551912045 4262294454 7103824090 10655736135 21311472270
• Sum of all divisors σ(n): 56243228328
• Sum of proper divisors (its aliquot sum) s(n): 34931756058
• 21311472270 is an abundant number, because the sum of its proper divisors (34931756058) is greater than itself. Its abundance is 13620283788

Bases of 21311472270

• Binary: 10011110110010000110100001010001110₂
• Hexadecimal: 0x4F643428E
• Base-36: 9SGAT8U

Squares and roots of 21311472270

• 21311472270 squared (21311472270²) is 454178850314978952900
• 21311472270 cubed (21311472270³) is 9679219974108154720361986083000
• The square root of 21311472270 is 145984.4932518519
• The cube root of 21311472270 is 2772.4974227021

Scales and comparisons

• 21,311,472,270 seconds is equal to 677 years, 33 weeks, 1 day, 13 hours, 24 minutes, 30 seconds.
• To count from 1 to 21,311,472,270 would take you about one thousand, three hundred fifty-five 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 21311472270 cubic inches would be around 231 feet tall.

Recreational maths with 21311472270

• 21311472270 backwards is 07227411312
• 21311472270 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21311472270's digits is 30
• More coming soon!