21809358012

Names of 21809358012

• Cardinal: 21809358012 can be written as Twenty-one billion, eight hundred nine million, three hundred fifty-eight thousand and twelve.

Scientific notation

• Scientific notation: 2.1809358012 × 10¹⁰

Factors of 21809358012

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1074

Divisors of 21809358012

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 12 13 19 26 29 38 39 52 57 58 76 78 87 114 116 156 174 228 247 348 377 487 494 521 551 741 754 974 988 1042 1102 1131 1461 1482 1508 1563 1653 1948 2084 2204 2262 2922 2964 3126 3306 4524 5844 6252 6331 6612 6773 7163 9253 9899 12662 13546 14123 14326 15109 18506 18993 19798 20319 21489 25324 27092 27759 28246 28652 29697 30218 37012 37986 39596 40638 42369 42978 45327 55518 56492 59394 60436 75972 81276 84738 85956 90654 111036 118788 120289 128687 169476 181308 183599 196417 240578 253727 257374 268337 287071 360867 367198 386061 392834 481156 507454 514748 536674 550797 574142 589251 721734 734396 761181 772122 785668 805011 861213 1014908 1073348 1101594 1148284 1178502 1443468 1522362 1544244 1610022 1722426 2203188 2357004 3044724 3220044 3298451 3444852 3488381 3731923 4820813 6596902 6976762 7358083 7463846 9641626 9895353 10465143 11195769 13193804 13953524 14462439 14716166 14927692 19283252 19790706 20930286 22074249 22391538 28924878 29432332 39581412 41860572 44148498 44783076 57849756 62670569 88296996 95655079 125341138 139803577 188011707 191310158 250682276 279607154 286965237 376023414 382620316 419410731 559214308 573930474 752046828 838821462 1147860948 1677642924 1817446501 3634893002 5452339503 7269786004 10904679006 21809358012
• Sum of all divisors σ(n): 59913907200
• Sum of proper divisors (its aliquot sum) s(n): 38104549188
• 21809358012 is an abundant number, because the sum of its proper divisors (38104549188) is greater than itself. Its abundance is 16295191176

Bases of 21809358012

• Binary: 10100010011111100000110010010111100₂
• Hexadecimal: 0x513F064BC
• Base-36: A0OQ8CC

Squares and roots of 21809358012

• 21809358012 squared (21809358012²) is 475648096895588592144
• 21809358012 cubed (21809358012³) is 10373579632922357389531546657728
• The square root of 21809358012 is 147679.9174295543
• The cube root of 21809358012 is 2793.9221060307

Scales and comparisons

• 21,809,358,012 seconds is equal to 693 years, 24 weeks, 3 days, 3 hours, 12 seconds.
• To count from 1 to 21,809,358,012 would take you about one thousand, three hundred eighty-six 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 21809358012 cubic inches would be around 232.8 feet tall.

Recreational maths with 21809358012

• 21809358012 backwards is 21085390812
• 21809358012 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21809358012's digits is 39
• More coming soon!