21680640000

Names of 21680640000

• Cardinal: 21680640000 can be written as Twenty-one billion, six hundred eighty million, six hundred forty thousand.

Scientific notation

• Scientific notation: 2.168064 × 10¹⁰

Factors of 21680640000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 951

Divisors of 21680640000

• Number of divisors d(n): 390
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 45 48 50 60 64 72 75 80 90 96 100 120 125 128 144 150 160 180 192 200 225 240 250 256 288 300 320 360 375 384 400 450 480 500 512 576 600 625 640 720 750 768 800 900 941 960 1000 1024 1125 1152 1200 1250 1280 1440 1500 1536 1600 1800 1875 1882 1920 2000 2048 2250 2304 2400 2500 2560 2823 2880 3000 3072 3200 3600 3750 3764 3840 4000 4096 4500 4608 4705 4800 5000 5120 5625 5646 5760 6000 6144 6400 7200 7500 7528 7680 8000 8469 9000 9216 9410 9600 10000 10240 11250 11292 11520 12000 12288 12800 14115 14400 15000 15056 15360 16000 16938 18000 18432 18820 19200 20000 20480 22500 22584 23040 23525 24000 25600 28230 28800 30000 30112 30720 32000 33876 36000 36864 37640 38400 40000 42345 45000 45168 46080 47050 48000 51200 56460 57600 60000 60224 61440 64000 67752 70575 72000 75280 76800 80000 84690 90000 90336 92160 94100 96000 102400 112920 115200 117625 120000 120448 128000 135504 141150 144000 150560 153600 160000 169380 180000 180672 184320 188200 192000 211725 225840 230400 235250 240000 240896 256000 271008 282300 288000 301120 307200 320000 338760 352875 360000 361344 376400 384000 423450 451680 460800 470500 480000 481792 512000 542016 564600 576000 588125 602240 640000 677520 705750 720000 722688 752800 768000 846900 903360 921600 941000 960000 963584 1058625 1084032 1129200 1152000 1176250 1204480 1280000 1355040 1411500 1440000 1445376 1505600 1536000 1693800 1764375 1806720 1882000 1920000 1927168 2117250 2168064 2258400 2304000 2352500 2408960 2560000 2710080 2823000 2880000 2890752 3011200 3387600 3528750 3613440 3764000 3840000 3854336 4234500 4336128 4516800 4608000 4705000 4817920 5293125 5420160 5646000 5760000 5781504 6022400 6775200 7057500 7226880 7528000 7680000 8469000 8672256 9033600 9410000 9635840 10586250 10840320 11292000 11520000 11563008 12044800 13550400 14115000 14453760 15056000 16938000 17344512 18067200 18820000 19271680 21172500 21680640 22584000 23040000 24089600 27100800 28230000 28907520 30112000 33876000 34689024 36134400 37640000 42345000 43361280 45168000 48179200 54201600 56460000 57815040 60224000 67752000 72268800 75280000 84690000 86722560 90336000 96358400 108403200 112920000 120448000 135504000 144537600 150560000 169380000 173445120 180672000 216806400 225840000 240896000 271008000 289075200 301120000 338760000 361344000 433612800 451680000 481792000 542016000 602240000 677520000 722688000 867225600 903360000 1084032000 1204480000 1355040000 1445376000 1806720000 2168064000 2408960000 2710080000 3613440000 4336128000 5420160000 7226880000 10840320000 21680640000
• Sum of all divisors σ(n): 78339756066
• Sum of proper divisors (its aliquot sum) s(n): 56659116066
• 21680640000 is an abundant number, because the sum of its proper divisors (56659116066) is greater than itself. Its abundance is 34978476066

Bases of 21680640000

• Binary: 10100001100010001000101000000000000₂
• Hexadecimal: 0x50C445000
• Base-36: 9YK3CW0

Squares and roots of 21680640000

• 21680640000 squared (21680640000²) is 470050150809600000000
• 21680640000 cubed (21680640000³) is 10190988101648646144000000000000
• The square root of 21680640000 is 147243.4718417085
• The cube root of 21680640000 is 2788.4147158575

Scales and comparisons

• 21,680,640,000 seconds is equal to 689 years, 19 weeks, 4 days, 8 hours.
• To count from 1 to 21,680,640,000 would take you about one thousand, three hundred seventy-eight 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 21680640000 cubic inches would be around 232.4 feet tall.

Recreational maths with 21680640000

• 21680640000 backwards is 00004608612
• The number of decimal digits it has is: 11
• The sum of 21680640000's digits is 27
• More coming soon!