21705728000

Names of 21705728000

• Cardinal: 21705728000 can be written as Twenty-one billion, seven hundred five million, seven hundred twenty-eight thousand.

Scientific notation

• Scientific notation: 2.1705728 × 10¹⁰

Factors of 21705728000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 106

Divisors of 21705728000

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 32 40 41 44 47 50 55 64 80 82 88 94 100 110 125 128 160 164 176 188 200 205 220 235 250 256 275 320 328 352 376 400 410 440 451 470 500 512 517 550 640 656 704 752 800 820 880 902 940 1000 1024 1025 1034 1100 1175 1280 1312 1375 1408 1504 1600 1640 1760 1804 1880 1927 2000 2048 2050 2068 2200 2255 2350 2560 2585 2624 2750 2816 3008 3200 3280 3520 3608 3760 3854 4000 4096 4100 4136 4400 4510 4700 5120 5125 5170 5248 5500 5632 5875 6016 6400 6560 7040 7216 7520 7708 8000 8192 8200 8272 8800 9020 9400 9635 10240 10250 10340 10496 11000 11264 11275 11750 12032 12800 12925 13120 14080 14432 15040 15416 16000 16400 16544 17600 18040 18800 19270 20480 20500 20680 20992 21197 22000 22528 22550 23500 24064 25600 25850 26240 28160 28864 30080 30832 32000 32800 33088 35200 36080 37600 38540 40960 41000 41360 41984 42394 44000 45056 45100 47000 48128 48175 51200 51700 52480 56320 56375 57728 60160 61664 64000 64625 65600 66176 70400 72160 75200 77080 82000 82720 83968 84788 88000 90112 90200 94000 96256 96350 102400 103400 104960 105985 112640 112750 115456 120320 123328 128000 129250 131200 132352 140800 144320 150400 154160 164000 165440 167936 169576 176000 180400 188000 192512 192700 204800 206800 209920 211970 225280 225500 230912 240640 240875 246656 256000 258500 262400 264704 281600 288640 300800 308320 328000 330880 335872 339152 352000 360800 376000 385024 385400 413600 419840 423940 450560 451000 461824 481280 481750 493312 512000 517000 524800 529408 529925 563200 577280 601600 616640 656000 661760 678304 704000 721600 752000 770800 827200 839680 847880 902000 923648 962560 963500 986624 1024000 1034000 1049600 1058816 1059850 1126400 1154560 1203200 1233280 1312000 1323520 1356608 1408000 1443200 1504000 1541600 1654400 1679360 1695760 1804000 1847296 1925120 1927000 1973248 2068000 2099200 2117632 2119700 2252800 2309120 2406400 2466560 2624000 2647040 2649625 2713216 2816000 2886400 3008000 3083200 3308800 3391520 3608000 3694592 3854000 3946496 4136000 4198400 4235264 4239400 4618240 4812800 4933120 5248000 5294080 5299250 5426432 5632000 5772800 6016000 6166400 6617600 6783040 7216000 7708000 7892992 8272000 8396800 8478800 9236480 9625600 9866240 10496000 10588160 10598500 10852864 11264000 11545600 12032000 12332800 13235200 13566080 14432000 15416000 15785984 16544000 16957600 18472960 19732480 20992000 21176320 21197000 21705728 23091200 24064000 24665600 26470400 27132160 28864000 30832000 33088000 33915200 39464960 41984000 42394000 43411456 46182400 48128000 49331200 52940800 54264320 57728000 61664000 66176000 67830400 78929920 84788000 86822912 92364800 98662400 105881600 108528640 115456000 123328000 132352000 135660800 169576000 173645824 197324800 217057280 230912000 246656000 264704000 271321600 339152000 394649600 434114560 461824000 493312000 529408000 542643200 678304000 868229120 986624000 1085286400 1356608000 1973248000 2170572800 2713216000 4341145600 5426432000 10852864000 21705728000
• Sum of all divisors σ(n): 61828655616
• Sum of proper divisors (its aliquot sum) s(n): 40122927616
• 21705728000 is an abundant number, because the sum of its proper divisors (40122927616) is greater than itself. Its abundance is 18417199616

Bases of 21705728000

• Binary: 10100001101110000110010000000000000₂
• Hexadecimal: 0x50DC32000
• Base-36: 9YZ12WW

Squares and roots of 21705728000

• 21705728000 squared (21705728000²) is 471138628009984000000
• 21705728000 cubed (21705728000³) is 10226406909877893988352000000000
• The square root of 21705728000 is 147328.6394425741
• The cube root of 21705728000 is 2789.4898498997

Scales and comparisons

• 21,705,728,000 seconds is equal to 690 years, 9 weeks, 16 hours, 53 minutes, 20 seconds.
• To count from 1 to 21,705,728,000 would take you about one thousand, three hundred eighty 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 21705728000 cubic inches would be around 232.5 feet tall.

Recreational maths with 21705728000

• 21705728000 backwards is 00082750712
• 21705728000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21705728000's digits is 32
• More coming soon!