21319691440

Names of 21319691440

• Cardinal: 21319691440 can be written as Twenty-one billion, three hundred nineteen million, six hundred ninety-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.131969144 × 10¹⁰

Factors of 21319691440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 322303

Divisors of 21319691440

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 829 1658 3316 4145 6632 8290 13264 16580 33160 66320 321467 642934 1285868 1607335 2571736 3214670 5143472 6429340 12858680 25717360 266496143 532992286 1065984572 1332480715 2131969144 2664961430 4263938288 5329922860 10659845720 21319691440
• Sum of all divisors σ(n): 49628229840
• Sum of proper divisors (its aliquot sum) s(n): 28308538400
• 21319691440 is an abundant number, because the sum of its proper divisors (28308538400) is greater than itself. Its abundance is 6988846960

Bases of 21319691440

• Binary: 10011110110110000001010110010110000₂
• Hexadecimal: 0x4F6C0ACB0
• Base-36: 9SL6Z74

Squares and roots of 21319691440

• 21319691440 squared (21319691440²) is 454529243096809273600
• 21319691440 cubed (21319691440³) is 9690423213280723761682537984000
• The square root of 21319691440 is 146012.6413705333
• The cube root of 21319691440 is 2772.8537988123

Scales and comparisons

• 21,319,691,440 seconds is equal to 677 years, 46 weeks, 5 days, 16 hours, 30 minutes, 40 seconds.
• To count from 1 to 21,319,691,440 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 21319691440 cubic inches would be around 231.1 feet tall.

Recreational maths with 21319691440

• 21319691440 backwards is 04419691312
• 21319691440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21319691440's digits is 40
• More coming soon!