21213191040

Names of 21213191040

• Cardinal: 21213191040 can be written as Twenty-one billion, two hundred thirteen million, one hundred ninety-one thousand and forty.

Scientific notation

• Scientific notation: 2.121319104 × 10¹⁰

Factors of 21213191040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 11048547

Divisors of 21213191040

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 320 384 480 640 960 1920 11048537 22097074 33145611 44194148 55242685 66291222 88388296 110485370 132582444 165728055 176776592 220970740 265164888 331456110 353553184 441941480 530329776 662912220 707106368 883882960 1060659552 1325824440 1414212736 1767765920 2121319104 2651648880 3535531840 4242638208 5303297760 7071063680 10606595520 21213191040
• Sum of all divisors σ(n): 67617052560
• Sum of proper divisors (its aliquot sum) s(n): 46403861520
• 21213191040 is an abundant number, because the sum of its proper divisors (46403861520) is greater than itself. Its abundance is 25190670480

Bases of 21213191040

• Binary: 10011110000011001111001101110000000₂
• Hexadecimal: 0x4F0679B80
• Base-36: 9QTSAYO

Squares and roots of 21213191040

• 21213191040 squared (21213191040²) is 449999474099536281600
• 21213191040 cubed (21213191040³) is 9545924811972995116992036864000
• The square root of 21213191040 is 145647.4889587871
• The cube root of 21213191040 is 2768.2289173279

Scales and comparisons

• 21,213,191,040 seconds is equal to 674 years, 26 weeks, 5 days, 1 hour, 4 minutes.
• To count from 1 to 21,213,191,040 would take you about one thousand, three hundred forty-nine 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 21213191040 cubic inches would be around 230.7 feet tall.

Recreational maths with 21213191040

• 21213191040 backwards is 04019131212
• 21213191040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21213191040's digits is 24
• More coming soon!