20985994512

Names of 20985994512

• Cardinal: 20985994512 can be written as Twenty billion, nine hundred eighty-five million, nine hundred ninety-four thousand, five hundred twelve.

Scientific notation

• Scientific notation: 2.0985994512 × 10¹⁰

Factors of 20985994512

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2417

Divisors of 20985994512

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 23 24 27 28 36 42 43 46 48 54 56 63 69 72 81 84 86 92 108 112 126 129 138 144 161 162 168 172 184 189 207 216 252 258 276 301 322 324 336 344 368 378 387 414 432 483 504 516 552 567 602 621 644 648 688 756 774 828 903 966 989 1008 1032 1104 1134 1161 1204 1242 1288 1296 1449 1512 1548 1656 1806 1863 1932 1978 2064 2268 2322 2339 2408 2484 2576 2709 2898 2967 3024 3096 3312 3483 3612 3726 3864 3956 4347 4536 4644 4678 4816 4968 5418 5796 5934 6192 6923 6966 7017 7224 7452 7728 7912 8127 8694 8901 9072 9288 9356 9936 10836 11592 11868 13041 13846 13932 14034 14448 14904 15824 16254 16373 17388 17802 18576 18712 20769 21051 21672 23184 23736 24381 26082 26703 27692 27864 28068 29808 32508 32746 34776 35604 37424 41538 42102 43344 47472 48762 49119 52164 53406 53797 55384 55728 56136 62307 63153 65016 65492 69552 71208 80109 83076 84204 97524 98238 100577 104328 106812 107594 110768 112272 124614 126306 130032 130984 142416 147357 160218 161391 166152 168408 186921 189459 195048 196476 201154 208656 213624 215188 249228 252612 261968 294714 301731 320436 322782 332304 336816 373842 376579 378918 390096 392952 402308 427248 430376 442071 484173 498456 505224 560763 589428 603462 640872 645564 704039 747684 753158 757836 785904 804616 860752 884142 905193 968346 996912 1010448 1121526 1129737 1178856 1206924 1281744 1291128 1326213 1408078 1452519 1495368 1506316 1515672 1609232 1768284 1810386 1936692 2112117 2243052 2259474 2313271 2357712 2413848 2582256 2652426 2715579 2816156 2905038 2990736 3012632 3031344 3389211 3536568 3620772 3873384 4224234 4357557 4486104 4518948 4626542 4827696 5304852 5431158 5632312 5810076 6025264 6336351 6778422 6939813 7073136 7241544 7746768 8146737 8448468 8715114 8972208 9037896 9253084 10167633 10609704 10862316 11264624 11620152 12672702 13556844 13879626 14483088 16192897 16293474 16896936 17430228 18075792 18506168 19009053 20335266 20819439 21219408 21724632 23240304 25345404 27113688 27759252 30502899 32385794 32586948 33793872 34860456 37012336 38018106 40670532 41638878 43449264 48578691 50690808 54227376 55518504 57027159 61005798 62458317 64771588 65173896 69720912 76036212 81341064 83277756 97157382 101381616 111037008 114054318 122011596 124916634 129543176 130347792 145736073 152072424 162682128 166555512 187374951 194314764 228108636 244023192 249833268 259086352 291472146 304144848 333111024 374749902 388629528 437208219 456217272 488046384 499666536 582944292 749499804 777259056 874416438 912434544 999333072 1165888584 1311624657 1498999608 1748832876 2331777168 2623249314 2997999216 3497665752 5246498628 6995331504 10492997256 20985994512
• Sum of all divisors σ(n): 74150968320
• Sum of proper divisors (its aliquot sum) s(n): 53164973808
• 20985994512 is an abundant number, because the sum of its proper divisors (53164973808) is greater than itself. Its abundance is 32178979296

Bases of 20985994512

• Binary: 10011100010110111001101110100010000₂
• Hexadecimal: 0x4E2DCDD10
• Base-36: 9N2IP00

Squares and roots of 20985994512

• 20985994512 squared (20985994512²) is 440411965657694118144
• 20985994512 cubed (20985994512³) is 9242483094311501233944663625728
• The square root of 20985994512 is 144865.4358775757
• The cube root of 20985994512 is 2758.3107053865

Scales and comparisons

• 20,985,994,512 seconds is equal to 667 years, 15 weeks, 10 hours, 55 minutes, 12 seconds.
• To count from 1 to 20,985,994,512 would take you about one thousand, three hundred thirty-four 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 20985994512 cubic inches would be around 229.9 feet tall.

Recreational maths with 20985994512

• 20985994512 backwards is 21549958902
• 20985994512 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20985994512's digits is 54
• More coming soon!