21420903924

Names of 21420903924

• Cardinal: 21420903924 can be written as Twenty-one billion, four hundred twenty million, nine hundred three thousand, nine hundred twenty-four.

Scientific notation

• Scientific notation: 2.1420903924 × 10¹⁰

Factors of 21420903924

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 48

Divisors of 21420903924

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 17 18 19 21 27 28 34 36 38 42 51 54 57 63 68 76 81 84 102 108 114 119 126 133 153 162 171 189 204 228 238 243 252 266 306 323 324 342 357 361 378 399 459 476 486 513 532 567 612 646 684 714 722 729 756 798 918 969 972 1026 1071 1083 1134 1197 1292 1377 1428 1444 1458 1539 1596 1701 1836 1938 2052 2142 2166 2187 2261 2268 2394 2527 2754 2907 2916 3078 3213 3249 3402 3591 3876 4131 4284 4332 4374 4522 4617 4788 5054 5103 5508 5814 6137 6156 6426 6498 6561 6783 6804 6859 7182 7581 8262 8721 8748 9044 9234 9639 9747 10108 10206 10773 11628 12274 12393 12852 12996 13122 13566 13718 13851 14364 15162 15309 16524 17442 18411 18468 19278 19494 20349 20412 20577 21546 22743 24548 24786 26163 26244 27132 27436 27702 28917 29241 30324 30618 32319 34884 36822 37179 38556 38988 40698 41154 41553 42959 43092 45486 45927 48013 49572 52326 55233 55404 57834 58482 61047 61236 61731 64638 68229 73644 74358 78489 81396 82308 83106 85918 86751 87723 90972 91854 96026 96957 104652 110466 111537 115668 116603 116964 122094 123462 124659 128877 129276 136458 144039 148716 156978 165699 166212 171836 173502 175446 183141 183708 185193 192052 193914 204687 220932 223074 233206 235467 244188 246924 249318 257754 260253 263169 272916 288078 290871 313956 331398 347004 349809 350892 366282 370386 386631 387828 409374 432117 446148 466412 470934 497097 498636 515508 520506 526338 549423 555579 576156 581742 614061 662796 699618 706401 732564 740772 773262 780759 789507 816221 818748 864234 872613 941868 994194 1041012 1049427 1052676 1098846 1111158 1159893 1163484 1228122 1296351 1399236 1412802 1491291 1546524 1561518 1579014 1632442 1648269 1666737 1728468 1745226 1842183 1988388 2098854 2119203 2197692 2222316 2319786 2368521 2448663 2456244 2592702 2825604 2982582 3123036 3148281 3158028 3264884 3296538 3333474 3479679 3490452 3684366 3889053 4197708 4238406 4473873 4639572 4737042 4897326 4944807 5000211 5185404 5526549 5965164 6296562 6593076 6666948 6959358 7345989 7368732 7778106 8476812 8947746 9444843 9474084 9794652 9889614 10000422 10439037 11053098 11667159 12593124 13421619 13918716 14691978 14834421 15000633 15556212 16579647 17895492 18889686 19779228 20000844 20878074 22037967 22106196 23334318 26843238 28334529 29383956 29668842 30001266 31317111 33159294 35001477 37779372 40264857 41756148 44075934 45001899 46668636 53686476 56669058 59337684 60002532 62634222 66113901 66318588 70002954 80529714 85003587 88151868 90003798 93951333 105004431 113338116 125268444 132227802 140005908 161059428 170007174 180007596 187902666 198341703 210008862 255010761 264455604 281853999 315013293 340014348 375805332 396683406 420017724 510021522 563707998 595025109 630026586 765032283 793366812 1020043044 1127415996 1190050218 1260053172 1530064566 1785075327 2380100436 3060129132 3570150654 5355225981 7140301308 10710451962 21420903924
• Sum of all divisors σ(n): 71818830720
• Sum of proper divisors (its aliquot sum) s(n): 50397926796
• 21420903924 is an abundant number, because the sum of its proper divisors (50397926796) is greater than itself. Its abundance is 28977022872

Bases of 21420903924

• Binary: 10011111100110010010000110111110100₂
• Hexadecimal: 0x4FCC90DF4
• Base-36: 9U9GB90

Squares and roots of 21420903924

• 21420903924 squared (21420903924²) is 458855124921238597776
• 21420903924 cubed (21420903924³) is 9829091545972870070040176073024
• The square root of 21420903924 is 146358.8190851511
• The cube root of 21420903924 is 2777.2347952367

Scales and comparisons

• 21,420,903,924 seconds is equal to 681 years, 6 weeks, 1 day, 3 hours, 5 minutes, 24 seconds.
• To count from 1 to 21,420,903,924 would take you about one thousand, three hundred sixty-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 21420903924 cubic inches would be around 231.4 feet tall.

Recreational maths with 21420903924

• 21420903924 backwards is 42930902412
• 21420903924 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21420903924's digits is 36
• More coming soon!