21004529280

Names of 21004529280

• Cardinal: 21004529280 can be written as Twenty-one billion, four million, five hundred twenty-nine thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.100452928 × 10¹⁰

Factors of 21004529280

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2555

Divisors of 21004529280

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 128 140 160 168 192 210 224 240 280 320 336 384 420 448 480 560 640 672 840 896 960 1051 1120 1344 1487 1680 1920 2102 2240 2688 2974 3153 3360 4204 4461 4480 5255 5948 6306 6720 7357 7435 8408 8922 10409 10510 11896 12612 13440 14714 14870 15765 16816 17844 20818 21020 22071 22305 23792 25224 29428 29740 31227 31530 33632 35688 36785 41636 42040 44142 44610 47584 50448 52045 58856 59480 62454 63060 67264 71376 73570 83272 84080 88284 89220 95168 100896 104090 110355 117712 118960 124908 126120 134528 142752 147140 156135 166544 168160 176568 178440 190336 201792 208180 220710 235424 237920 249816 252240 285504 294280 312270 333088 336320 353136 356880 403584 416360 441420 470848 475840 499632 504480 571008 588560 624540 666176 672640 706272 713760 832720 882840 941696 951680 999264 1008960 1177120 1249080 1332352 1412544 1427520 1562837 1665440 1765680 1998528 2017920 2354240 2498160 2825088 2855040 3125674 3330880 3531360 3997056 4688511 4708480 4996320 6251348 6661760 7062720 7814185 9377022 9992640 10939859 12502696 14125440 15628370 18754044 19985280 21879718 23442555 25005392 31256740 32819577 37508088 43759436 46885110 50010784 54699295 62513480 65639154 75016176 87518872 93770220 100021568 109398590 125026960 131278308 150032352 164097885 175037744 187540440 200043136 218797180 250053920 262556616 300064704 328195770 350075488 375080880 437594360 500107840 525113232 600129408 656391540 700150976 750161760 875188720 1000215680 1050226464 1312783080 1400301952 1500323520 1750377440 2100452928 2625566160 3000647040 3500754880 4200905856 5251132320 7001509760 10502264640 21004529280
• Sum of all divisors σ(n): 76640808960
• Sum of proper divisors (its aliquot sum) s(n): 55636279680
• 21004529280 is an abundant number, because the sum of its proper divisors (55636279680) is greater than itself. Its abundance is 34631750400

Bases of 21004529280

• Binary: 10011100011111101111010111010000000₂
• Hexadecimal: 0x4E3F7AE80
• Base-36: 9NDJYIO

Squares and roots of 21004529280

• 21004529280 squared (21004529280²) is 441190250274377318400
• 21004529280 cubed (21004529280³) is 9266993529938686418100682752000
• The square root of 21004529280 is 144929.3941200335
• The cube root of 21004529280 is 2759.1225103783

Scales and comparisons

• 21,004,529,280 seconds is equal to 667 years, 45 weeks, 4 days, 23 hours, 28 minutes.
• To count from 1 to 21,004,529,280 would take you about one thousand, three hundred thirty-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 21004529280 cubic inches would be around 229.9 feet tall.

Recreational maths with 21004529280

• 21004529280 backwards is 08292540012
• The number of decimal digits it has is: 11
• The sum of 21004529280's digits is 33
• More coming soon!