21389330970

Names of 21389330970

• Cardinal: 21389330970 can be written as Twenty-one billion, three hundred eighty-nine million, three hundred thirty thousand, nine hundred seventy.

Scientific notation

• Scientific notation: 2.138933097 × 10¹⁰

Factors of 21389330970

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 556657

Divisors of 21389330970

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 61 63 70 90 105 122 126 183 210 305 315 366 427 549 610 630 854 915 1098 1281 1830 2135 2562 2745 3843 4270 5490 6405 7686 12810 19215 38430 556579 1113158 1669737 2782895 3339474 3896053 5009211 5565790 7792106 8348685 10018422 11688159 16697370 19480265 23376318 25046055 33951319 35064477 38960530 50092110 58440795 67902638 70128954 101853957 116881590 169756595 175322385 203707914 237659233 305561871 339513190 350644770 475318466 509269785 611123742 712977699 1018539570 1188296165 1425955398 1527809355 2138933097 2376592330 3055618710 3564888495 4277866194 7129776990 10694665485 21389330970
• Sum of all divisors σ(n): 64598901120
• Sum of proper divisors (its aliquot sum) s(n): 43209570150
• 21389330970 is an abundant number, because the sum of its proper divisors (43209570150) is greater than itself. Its abundance is 21820239180

Bases of 21389330970

• Binary: 10011111010111001110100101000011010₂
• Hexadecimal: 0x4FAE74A1A
• Base-36: 9TQNLEI

Squares and roots of 21389330970

• 21389330970 squared (21389330970²) is 457503479344201140900
• 21389330970 cubed (21389330970³) is 9785693339619676752961703673000
• The square root of 21389330970 is 146250.9178432737
• The cube root of 21389330970 is 2775.8696392987

Scales and comparisons

• 21,389,330,970 seconds is equal to 680 years, 5 weeks, 6 days, 16 hours, 49 minutes, 30 seconds.
• To count from 1 to 21,389,330,970 would take you about one thousand, three hundred sixty 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 21389330970 cubic inches would be around 231.3 feet tall.

Recreational maths with 21389330970

• 21389330970 backwards is 07903398312
• 21389330970 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21389330970's digits is 45
• More coming soon!