21528012800

Names of 21528012800

• Cardinal: 21528012800 can be written as Twenty-one billion, five hundred twenty-eight million, twelve thousand, eight hundred.

Scientific notation

• Scientific notation: 2.15280128 × 10¹⁰

Factors of 21528012800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 8595

Divisors of 21528012800

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 64 70 80 98 100 112 128 140 160 175 196 200 224 245 256 280 320 350 392 400 448 490 512 560 640 700 784 800 896 980 1024 1120 1225 1280 1400 1568 1600 1792 1960 2048 2240 2450 2560 2800 3136 3200 3584 3920 4480 4900 5120 5600 6272 6400 7168 7840 8581 8960 9800 10240 11200 12544 12800 14336 15680 17162 17920 19600 22400 25088 25600 31360 34324 35840 39200 42905 44800 50176 51200 60067 62720 68648 71680 78400 85810 89600 100352 120134 125440 137296 156800 171620 179200 214525 240268 250880 274592 300335 313600 343240 358400 420469 429050 480536 501760 549184 600670 627200 686480 840938 858100 961072 1098368 1201340 1254400 1372960 1501675 1681876 1716200 1922144 2102345 2196736 2402680 2508800 2745920 3003350 3363752 3432400 3844288 4204690 4393472 4805360 5491840 6006700 6727504 6864800 7688576 8409380 8786944 9610720 10511725 10983680 12013400 13455008 13729600 15377152 16818760 17573888 19221440 21023450 21967360 24026800 26910016 27459200 30754304 33637520 38442880 42046900 43934720 48053600 53820032 54918400 61508608 67275040 76885760 84093800 87869440 96107200 107640064 109836800 123017216 134550080 153771520 168187600 192214400 215280128 219673600 269100160 307543040 336375200 384428800 430560256 439347200 538200320 615086080 672750400 768857600 861120512 1076400640 1345500800 1537715200 2152801280 2691001600 3075430400 4305602560 5382003200 10764006400 21528012800
• Sum of all divisors σ(n): 62098193430
• Sum of proper divisors (its aliquot sum) s(n): 40570180630
• 21528012800 is an abundant number, because the sum of its proper divisors (40570180630) is greater than itself. Its abundance is 19042167830

Bases of 21528012800

• Binary: 10100000011001010110110100000000000₂
• Hexadecimal: 0x5032B6800
• Base-36: 9W180ZK

Squares and roots of 21528012800

• 21528012800 squared (21528012800²) is 463455335116963840000
• 21528012800 cubed (21528012800³) is 9977272386626287044657152000000
• The square root of 21528012800 is 146724.2747468869
• The cube root of 21528012800 is 2781.8560143567

Scales and comparisons

• 21,528,012,800 seconds is equal to 684 years, 27 weeks, 1 day, 19 hours, 33 minutes, 20 seconds.
• To count from 1 to 21,528,012,800 would take you about one thousand, three hundred sixty-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 21528012800 cubic inches would be around 231.8 feet tall.

Recreational maths with 21528012800

• 21528012800 backwards is 00821082512
• The number of decimal digits it has is: 11
• The sum of 21528012800's digits is 29
• More coming soon!