20921391504

Names of 20921391504

• Cardinal: 20921391504 can be written as Twenty billion, nine hundred twenty-one million, three hundred ninety-one thousand, five hundred four.

Scientific notation

• Scientific notation: 2.0921391504 × 10¹⁰

Factors of 20921391504

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1696

Divisors of 20921391504

• Number of divisors d(n): 300
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 59 72 78 81 104 108 117 118 144 156 162 169 177 208 216 234 236 312 324 338 351 354 432 468 472 507 531 624 648 676 702 708 767 936 944 1014 1053 1062 1296 1352 1404 1416 1521 1534 1593 1619 1872 2028 2106 2124 2301 2704 2808 2832 3042 3068 3186 3238 4056 4212 4248 4563 4602 4779 4857 5616 6084 6136 6372 6476 6903 8112 8424 8496 9126 9204 9558 9714 9971 12168 12272 12744 12952 13689 13806 14571 16848 18252 18408 19116 19428 19942 20709 21047 24336 25488 25904 27378 27612 29142 29913 36504 36816 38232 38856 39884 41418 42094 43713 54756 55224 58284 59826 62127 63141 73008 76464 77712 79768 82836 84188 87426 89739 95521 109512 110448 116568 119652 124254 126282 131139 159536 165672 168376 174852 179478 189423 191042 219024 233136 239304 248508 252564 262278 269217 273611 286563 331344 336752 349704 358956 378846 382084 478608 497016 505128 524556 538434 547222 568269 573126 699408 717912 757692 764168 807651 820833 859689 994032 1010256 1049112 1076868 1094444 1136538 1146252 1241773 1435824 1515384 1528336 1615302 1641666 1704807 1719378 2098224 2153736 2188888 2273076 2292504 2462499 2483546 2579067 3030768 3230604 3283332 3409614 3438756 3725319 4307472 4377776 4546152 4585008 4924998 4967092 5158134 6461208 6566664 6819228 6877512 7387497 7450638 7737201 9092304 9849996 9934184 10316268 11175957 12922416 13133328 13638456 13755024 14774994 14901276 15474402 16143049 19699992 19868368 20632536 22162491 22351914 27276912 29549988 29802552 30948804 32286098 33527871 39399984 41265072 44324982 44703828 48429147 59099976 59605104 61897608 64572196 67055742 88649964 89407656 96858294 100583613 118199952 123795216 129144392 134111484 145287441 177299928 178815312 193716588 201167226 258288784 268222968 290574882 354599856 387433176 402334452 435862323 536445936 581149764 774866352 804668904 871724646 1162299528 1307586969 1609337808 1743449292 2324599056 2615173938 3486898584 5230347876 6973797168 10460695752 20921391504
• Sum of all divisors σ(n): 66721287600
• Sum of proper divisors (its aliquot sum) s(n): 45799896096
• 20921391504 is an abundant number, because the sum of its proper divisors (45799896096) is greater than itself. Its abundance is 24878504592

Bases of 20921391504

• Binary: 10011011111000000110001100110010000₂
• Hexadecimal: 0x4DF031990
• Base-36: 9M02100

Squares and roots of 20921391504

• 20921391504 squared (20921391504²) is 437704622463643382016
• 20921391504 cubed (20921391504³) is 9157389769672396201395368792064
• The square root of 20921391504 is 144642.2880903091
• The cube root of 20921391504 is 2755.4774136713

Scales and comparisons

• 20,921,391,504 seconds is equal to 665 years, 12 weeks, 1 day, 17 hours, 38 minutes, 24 seconds.
• To count from 1 to 20,921,391,504 would take you about one thousand, three hundred thirty 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 20921391504 cubic inches would be around 229.6 feet tall.

Recreational maths with 20921391504

• 20921391504 backwards is 40519312902
• 20921391504 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20921391504's digits is 36
• More coming soon!