821028694749942

Names of 821028694749942

• Cardinal: 821028694749942 can be written as Eight hundred twenty-one trillion, twenty-eight billion, six hundred ninety-four million, seven hundred forty-nine thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 8.21028694749942 × 10¹⁴

Factors of 821028694749942

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 438

Divisors of 821028694749942

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 6 7 14 17 21 34 42 49 51 98 102 119 147 238 294 343 357 409 686 714 818 833 1029 1227 1666 2058 2401 2454 2499 2863 4802 4998 5726 5831 6953 7203 8589 11662 13906 14406 16807 17178 17493 20041 20859 33614 34986 40082 40817 41718 48671 50421 60123 81634 97342 100842 117649 120246 122451 140287 146013 167281 235298 244902 280574 285719 292026 334562 340697 352947 420861 501843 571438 681394 705894 841722 857157 982009 1003686 1022091 1170967 1714314 1964018 2000033 2044182 2341934 2384879 2843777 2946027 3512901 4000066 4769758 5687554 5892054 6000099 6874063 7025802 7154637 8196769 8531331 12000198 13748126 14309274 16393538 16694153 17062662 19906439 20622189 24590307 33388306 39812878 41244378 48118441 49180614 50082459 57377383 59719317 68417929 96236882 100164918 114754766 116859071 119438634 136835858 139345073 144355323 172132149 205253787 233718142 278690146 288710646 344264298 350577213 401641681 410507574 418035219 478925503 701154426 803283362 818013497 836070438 957851006 975415511 1163104793 1204925043 1436776509 1636026994 1950831022 2326209586 2409850086 2454040491 2811491767 2873553018 2926246533 3352478521 3489314379 4908080982 5622983534 5852493066 6704957042 6827908577 6978628758 8141733551 8434475301 10057435563 13655817154 16283467102 16868950602 19680442369 20114871126 20483725731 23467349647 24425200653 39360884738 40967451462 46934699294 47795360039 48850401306 56992134857 59041327107 70402048941 95590720078 113984269714 118082654214 140804097882 143386080117 164271447529 170976404571 286772160234 328542895058 334567520273 341952809142 398944943999 492814342587 669135040546 797889887998 985628685174 1003702560819 1149900132703 1196834831997 2007405121638 2299800265406 2393669663994 2792614607993 3449700398109 5585229215986 6899400796218 8049300928921 8377843823979 16098601857842 16755687647958 19548302255951 24147902786763 39096604511902 48295805573526 58644906767853 117289813535706 136838115791657 273676231583314 410514347374971 821028694749942
• Sum of all divisors σ(n): 2033392991977440
• Sum of proper divisors (its aliquot sum) s(n): 1212364297227498
• 821028694749942 is an abundant number, because the sum of its proper divisors (1212364297227498) is greater than itself. Its abundance is 391335602477556

Bases of 821028694749942

• Binary: 10111010101011100010100011101100110111001011110110₂
• Hexadecimal: 0x2EAB8A3B372F6
• Base-36: 8313DIIRQU

Squares and roots of 821028694749942

• 821028694749942 squared (821028694749942²) is 674088117602793438233909003364
• 821028694749942 cubed (821028694749942³) is 553445687341866898436230092202800712416804888
• The square root of 821028694749942 is 28653598.2862526709
• The cube root of 821028694749942 is 93638.1400449677

Scales and comparisons

• 821,028,694,749,942 seconds is equal to 26,106,172 years, 45 weeks, 6 days, 23 hours, 25 minutes, 42 seconds.
• To count from 1 to 821,028,694,749,942 would take you about sixty-five million, two hundred sixty-five thousand, four hundred thirty-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 821028694749942 cubic inches would be around 7803.2 feet tall.

Recreational maths with 821028694749942

• 821028694749942 backwards is 249947496820128
• The number of decimal digits it has is: 15
• The sum of 821028694749942's digits is 75
• More coming soon!