21309120450

Names of 21309120450

• Cardinal: 21309120450 can be written as Twenty-one billion, three hundred nine million, one hundred twenty thousand, four hundred fifty.

Scientific notation

• Scientific notation: 2.130912045 × 10¹⁰

Factors of 21309120450

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1361

Divisors of 21309120450

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 25 30 45 50 75 90 127 150 225 254 381 450 571 635 653 762 1142 1143 1270 1306 1713 1905 1959 2286 2855 3175 3265 3426 3810 3918 5139 5710 5715 5877 6350 6530 8565 9525 9795 10278 11430 11754 14275 16325 17130 19050 19590 25695 28550 28575 29385 32650 42825 48975 51390 57150 58770 72517 82931 85650 97950 128475 145034 146925 165862 217551 248793 256950 293850 362585 372863 414655 435102 497586 652653 725170 745726 746379 829310 1087755 1118589 1243965 1305306 1492758 1812925 1864315 2073275 2175510 2237178 2487930 3263265 3355767 3625850 3728630 3731895 4146550 5438775 5592945 6219825 6526530 6711534 7463790 9321575 10877550 11185890 12439650 16316325 16778835 18643150 18659475 27964725 32632650 33557670 37318950 47353601 55929450 83894175 94707202 142060803 167788350 236768005 284121606 426182409 473536010 710304015 852364818 1183840025 1420608030 2130912045 2367680050 3551520075 4261824090 7103040150 10654560225 21309120450
• Sum of all divisors σ(n): 57890866176
• Sum of proper divisors (its aliquot sum) s(n): 36581745726
• 21309120450 is an abundant number, because the sum of its proper divisors (36581745726) is greater than itself. Its abundance is 15272625276

Bases of 21309120450

• Binary: 10011110110000111110101111111000010₂
• Hexadecimal: 0x4F61F5FC2
• Base-36: 9SEWEKI

Squares and roots of 21309120450

• 21309120450 squared (21309120450²) is 454078614352608202500
• 21309120450 cubed (21309120450³) is 9676015887008826958730491125000
• The square root of 21309120450 is 145976.4379959999
• The cube root of 21309120450 is 2772.3954329589

Scales and comparisons

• 21,309,120,450 seconds is equal to 677 years, 29 weeks, 2 days, 8 hours, 7 minutes, 30 seconds.
• To count from 1 to 21,309,120,450 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 21309120450 cubic inches would be around 231 feet tall.

Recreational maths with 21309120450

• 21309120450 backwards is 05402190312
• The number of decimal digits it has is: 11
• The sum of 21309120450's digits is 27
• More coming soon!