21288992220

Names of 21288992220

• Cardinal: 21288992220 can be written as Twenty-one billion, two hundred eighty-eight million, nine hundred ninety-two thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.128899222 × 10¹⁰

Factors of 21288992220

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2072

Divisors of 21288992220

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 29 30 34 36 45 51 58 60 68 85 87 90 102 116 127 145 153 170 174 180 204 254 255 261 290 306 340 348 381 435 493 508 510 522 580 612 635 762 765 870 986 1020 1044 1143 1270 1305 1479 1524 1530 1740 1889 1905 1972 2159 2286 2465 2540 2610 2958 3060 3683 3778 3810 4318 4437 4572 4930 5220 5667 5715 5916 6477 7366 7395 7556 7620 8636 8874 9445 9860 10795 11049 11334 11430 12954 14732 14790 17001 17748 18415 18890 19431 21590 22098 22185 22668 22860 25908 28335 29580 32113 32385 33147 34002 36830 37780 38862 43180 44196 44370 54781 55245 56670 62611 64226 64770 66294 68004 73660 77724 85005 88740 96339 97155 109562 110490 113340 125222 128452 129540 132588 160565 164343 165735 170010 187833 192678 194310 219124 220980 239903 250444 273905 289017 313055 321130 328686 331470 340020 375666 385356 388620 479806 481695 493029 547810 563499 578034 626110 642260 657372 662940 719709 751332 821715 931277 939165 959612 963390 986058 1095620 1126998 1156068 1199515 1252220 1439418 1445085 1643430 1862554 1878330 1926780 1972116 2159127 2253996 2399030 2465145 2793831 2817495 2878836 2890170 3286860 3598545 3725108 3756660 4078351 4318254 4656385 4798060 4930290 5587662 5634990 5780340 6957187 7197090 8156702 8381493 8636508 9312770 9860580 10795635 11175324 11269980 12235053 13914374 13969155 14394180 16313404 16762986 18625540 20391755 20871561 21591270 24470106 27828748 27938310 33525972 34785935 36705159 40783510 41743122 41907465 43182540 48940212 55876620 61175265 62614683 69571870 73410318 81567020 83486244 83814930 104357805 118272179 122350530 125229366 139143740 146820636 167629860 183525795 208715610 236544358 244701060 250458732 313073415 354816537 367051590 417431220 473088716 591360895 626146830 709633074 734103180 1064449611 1182721790 1252293660 1419266148 1774082685 2128899222 2365443580 3548165370 4257798444 5322248055 7096330740 10644496110 21288992220
• Sum of all divisors σ(n): 71327692800
• Sum of proper divisors (its aliquot sum) s(n): 50038700580
• 21288992220 is an abundant number, because the sum of its proper divisors (50038700580) is greater than itself. Its abundance is 28749708360

Bases of 21288992220

• Binary: 10011110100111011000011110111011100₂
• Hexadecimal: 0x4F4EC3DDC
• Base-36: 9S2WZJ0

Squares and roots of 21288992220

• 21288992220 squared (21288992220²) is 453221189743220528400
• 21288992220 cubed (21288992220³) is 9648622382382565626851889048000
• The square root of 21288992220 is 145907.4782867555
• The cube root of 21288992220 is 2771.5222388947

Scales and comparisons

• 21,288,992,220 seconds is equal to 676 years, 48 weeks, 8 hours, 57 minutes.
• To count from 1 to 21,288,992,220 would take you about one thousand, three hundred fifty-three 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 21288992220 cubic inches would be around 231 feet tall.

Recreational maths with 21288992220

• 21288992220 backwards is 02229988212
• 21288992220 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21288992220's digits is 45
• More coming soon!