21023249478

Names of 21023249478

• Cardinal: 21023249478 can be written as Twenty-one billion, twenty-three million, two hundred forty-nine thousand, four hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1023249478 × 10¹⁰

Factors of 21023249478

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1243

Divisors of 21023249478

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 6 7 11 14 17 21 22 31 33 34 42 51 62 66 77 79 93 102 119 154 158 186 187 217 231 237 238 341 357 374 434 462 474 527 553 561 651 682 714 869 1023 1054 1093 1106 1122 1302 1309 1343 1581 1659 1738 2046 2186 2387 2449 2607 2618 2686 3162 3279 3318 3689 3927 4029 4774 4898 5214 5797 6083 6558 7161 7347 7378 7651 7854 8058 9401 11067 11594 12023 12166 14322 14694 14773 15302 17143 17391 18249 18581 18802 22134 22953 24046 26939 28203 29546 33883 34286 34782 36069 36498 37162 40579 41633 44319 45906 51429 53878 55743 56406 67766 72138 80817 81158 83266 84161 86347 88638 101649 102858 103411 111486 121737 124899 130067 161634 168322 172694 188573 203298 204391 206822 237181 243474 249798 252483 259041 260134 291431 310233 372713 377146 390201 408782 457963 474362 504966 518082 565719 576011 582862 604429 613173 620466 711543 745426 780402 874293 915926 949817 1118139 1131438 1152022 1208858 1226346 1373889 1423086 1430737 1467899 1728033 1748586 1813287 1899634 2236278 2608991 2676757 2747778 2849451 2861474 2935798 3205741 3456066 3626574 4032077 4292211 4403697 5217982 5353514 5698902 6336121 6411482 6648719 7826973 8030271 8064154 8584422 8807394 9617223 10275293 12096231 12672242 13297438 15653946 16060542 16146889 18737299 19008363 19234446 19946157 20550586 24192462 29444327 30825879 32293778 37474598 38016726 39892314 44352847 45504869 48440667 56211897 58888654 61651758 88332981 88705694 91009738 96881334 112423794 113028223 133058541 136514607 176665962 206110289 226056446 266117082 273029214 318534083 339084669 412220578 500553559 618330867 637068166 678169338 955602249 1001107118 1236661734 1501660677 1911204498 3003321354 3503874913 7007749826 10511624739 21023249478
• Sum of all divisors σ(n): 58074071040
• Sum of proper divisors (its aliquot sum) s(n): 37050821562
• 21023249478 is an abundant number, because the sum of its proper divisors (37050821562) is greater than itself. Its abundance is 16027572084

Bases of 21023249478

• Binary: 10011100101000101010101010001000110₂
• Hexadecimal: 0x4E5155446
• Base-36: 9NOP746

Squares and roots of 21023249478

• 21023249478 squared (21023249478²) is 441977018614227272484
• 21023249478 cubed (21023249478³) is 9291793125869549789622616763352
• The square root of 21023249478 is 144993.9635915923
• The cube root of 21023249478 is 2759.9419524127

Scales and comparisons

• 21,023,249,478 seconds is equal to 668 years, 24 weeks, 4 days, 15 hours, 31 minutes, 18 seconds.
• To count from 1 to 21,023,249,478 would take you about one thousand, three hundred thirty-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 21023249478 cubic inches would be around 230 feet tall.

Recreational maths with 21023249478

• 21023249478 backwards is 87494232012
• 21023249478 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21023249478's digits is 42
• More coming soon!