20802129920

Names of 20802129920

• Cardinal: 20802129920 can be written as Twenty billion, eight hundred two million, one hundred twenty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.080212992 × 10¹⁰

Factors of 20802129920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 7134

Divisors of 20802129920

• Number of divisors d(n): 208
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 20 22 26 32 40 44 52 55 64 65 80 88 104 110 128 130 143 160 176 208 220 256 260 286 320 352 416 440 512 520 572 640 704 715 832 880 1024 1040 1144 1280 1408 1430 1664 1760 2048 2080 2288 2560 2816 2860 3328 3520 4096 4160 4576 5120 5632 5720 6656 7040 7103 8320 9152 10240 11264 11440 13312 14080 14206 16640 18304 20480 22528 22880 26624 28160 28412 33280 35515 36608 45056 45760 53248 56320 56824 66560 71030 73216 78133 91520 92339 112640 113648 133120 142060 146432 156266 183040 184678 225280 227296 266240 284120 292864 312532 366080 369356 390665 454592 461695 568240 585728 625064 732160 738712 781330 909184 923390 1015729 1136480 1250128 1464320 1477424 1562660 1818368 1846780 2031458 2272960 2500256 2928640 2954848 3125320 3636736 3693560 4062916 4545920 5000512 5078645 5909696 6250640 7273472 7387120 8125832 9091840 10001024 10157290 11819392 12501280 14546944 14774240 16251664 18183680 20002048 20314580 23638784 25002560 29093888 29548480 32503328 36367360 40004096 40629160 47277568 50005120 59096960 65006656 72734720 80008192 81258320 94555136 100010240 118193920 130013312 145469440 160016384 162516640 189110272 200020480 236387840 260026624 320032768 325033280 378220544 400040960 472775680 520053248 650066560 800081920 945551360 1040106496 1300133120 1600163840 1891102720 2080212992 2600266240 4160425984 5200532480 10401064960 20802129920
• Sum of all divisors σ(n): 58654374912
• Sum of proper divisors (its aliquot sum) s(n): 37852244992
• 20802129920 is an abundant number, because the sum of its proper divisors (37852244992) is greater than itself. Its abundance is 17050115072

Bases of 20802129920

• Binary: 10011010111111001110101000000000000₂
• Hexadecimal: 0x4D7E75000
• Base-36: 9K11U68

Squares and roots of 20802129920

• 20802129920 squared (20802129920²) is 432728609208559206400
• 20802129920 cubed (20802129920³) is 9001676748857356987544895488000
• The square root of 20802129920 is 144229.4349985467
• The cube root of 20802129920 is 2750.2316023123

Scales and comparisons

• 20,802,129,920 seconds is equal to 661 years, 23 weeks, 9 hours, 25 minutes, 20 seconds.
• To count from 1 to 20,802,129,920 would take you about one thousand, three hundred twenty-two 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 20802129920 cubic inches would be around 229.2 feet tall.

Recreational maths with 20802129920

• 20802129920 backwards is 02992120802
• The number of decimal digits it has is: 11
• The sum of 20802129920's digits is 35
• More coming soon!