21285109120

Names of 21285109120

• Cardinal: 21285109120 can be written as Twenty-one billion, two hundred eighty-five million, one hundred nine thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.128510912 × 10¹⁰

Factors of 21285109120

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 945

Divisors of 21285109120

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 29 32 40 44 55 58 64 80 88 110 116 128 137 145 160 176 220 232 274 290 319 320 352 440 464 548 580 638 640 685 704 761 880 928 1096 1160 1276 1370 1408 1507 1522 1595 1760 1856 2192 2320 2552 2740 3014 3044 3190 3520 3712 3805 3973 4384 4640 5104 5480 6028 6088 6380 7040 7535 7610 7946 8371 8768 9280 10208 10960 12056 12176 12760 15070 15220 15892 16742 17536 18560 19865 20416 21920 22069 24112 24352 25520 30140 30440 31784 33484 39730 40832 41855 43703 43840 44138 48224 48704 51040 60280 60880 63568 66968 79460 83710 87406 87680 88276 96448 97408 102080 104257 110345 120560 121760 127136 133936 158920 167420 174812 176552 192896 204160 208514 218515 220690 241120 242759 243520 254272 267872 317840 334840 349624 353104 417028 437030 441380 482240 485518 487040 508544 521285 535744 635680 669680 699248 706208 834056 874060 882760 964480 971036 1042570 1071488 1146827 1213795 1271360 1339360 1398496 1412416 1668112 1748120 1765520 1942072 2085140 2293654 2427590 2542720 2678720 2796992 2824832 3023453 3336224 3496240 3531040 3884144 4170280 4587308 4855180 5357440 5593984 5734135 6046906 6672448 6992480 7062080 7768288 8340560 9174616 9710360 11468270 12093812 13344896 13984960 14124160 15117265 15536576 16681120 18349232 19420720 22936540 24187624 27969920 30234530 31073152 33257983 33362240 36698464 38841440 45873080 48375248 60469060 66515966 66724480 73396928 77682880 91746160 96750496 120938120 133031932 146793856 155365760 166289915 183492320 193500992 241876240 266063864 332579830 366984640 387001984 483752480 532127728 665159660 733969280 967504960 1064255456 1330319320 1935009920 2128510912 2660638640 4257021824 5321277280 10642554560 21285109120
• Sum of all divisors σ(n): 57919924800
• Sum of proper divisors (its aliquot sum) s(n): 36634815680
• 21285109120 is an abundant number, because the sum of its proper divisors (36634815680) is greater than itself. Its abundance is 15349706560

Bases of 21285109120

• Binary: 10011110100101100001111110110000000₂
• Hexadecimal: 0x4F4B0FD80
• Base-36: 9S0LRB4

Squares and roots of 21285109120

• 21285109120 squared (21285109120²) is 453055870250307174400
• 21285109120 cubed (21285109120³) is 9643343635734349920622870528000
• The square root of 21285109120 is 145894.1709596377
• The cube root of 21285109120 is 2771.3537206249

Scales and comparisons

• 21,285,109,120 seconds is equal to 676 years, 41 weeks, 4 days, 10 hours, 18 minutes, 40 seconds.
• To count from 1 to 21,285,109,120 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 21285109120 cubic inches would be around 230.9 feet tall.

Recreational maths with 21285109120

• 21285109120 backwards is 02190158212
• The number of decimal digits it has is: 11
• The sum of 21285109120's digits is 31
• More coming soon!