21138736260

Names of 21138736260

• Cardinal: 21138736260 can be written as Twenty-one billion, one hundred thirty-eight million, seven hundred thirty-six thousand, two hundred sixty.

Scientific notation

• Scientific notation: 2.113873626 × 10¹⁰

Factors of 21138736260

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2700

Divisors of 21138736260

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 29 30 58 60 61 79 87 116 122 145 158 174 183 237 244 290 305 316 348 366 395 435 474 580 610 732 790 870 915 948 1185 1220 1580 1740 1769 1830 2291 2370 2521 3538 3660 4582 4740 4819 5042 5307 6873 7076 7563 8845 9164 9638 10084 10614 11455 12605 13746 14457 15126 17690 19276 21228 22910 24095 25210 26535 27492 28914 30252 34365 35380 37815 45820 48190 50420 53070 57828 68730 72285 73109 75630 96380 106140 137460 139751 144570 146218 151260 153781 199159 219327 279502 289140 292436 307562 365545 398318 419253 438654 461343 559004 597477 615124 698755 731090 768905 796636 838506 877308 922686 995795 1096635 1194954 1397510 1462180 1537810 1677012 1845372 1991590 2096265 2193270 2306715 2389908 2795020 2987385 3075620 3983180 4192530 4386540 4459649 4613430 5775611 5974770 8385060 8919298 9226860 11551222 11949540 12148699 13378947 17326833 17838596 22298245 23102444 24297398 26757894 28878055 34653666 36446097 44596490 48594796 53515788 57756110 60743495 66894735 69307332 72892194 86634165 89192980 115512220 121486990 133789470 145784388 173268330 182230485 242973980 267578940 346536660 352312271 364460970 704624542 728921940 1056936813 1409249084 1761561355 2113873626 3523122710 4227747252 5284684065 7046245420 10569368130 21138736260
• Sum of all divisors σ(n): 63045964800
• Sum of proper divisors (its aliquot sum) s(n): 41907228540
• 21138736260 is an abundant number, because the sum of its proper divisors (41907228540) is greater than itself. Its abundance is 20768492280

Bases of 21138736260

• Binary: 10011101011111101111000010010000100₂
• Hexadecimal: 0x4EBF78484
• Base-36: 9PLGHAC

Squares and roots of 21138736260

• 21138736260 squared (21138736260²) is 446846170669838787600
• 21138736260 cubed (21138736260³) is 9445763350580669667794558376000
• The square root of 21138736260 is 145391.6650293269
• The cube root of 21138736260 is 2764.9864461577

Scales and comparisons

• 21,138,736,260 seconds is equal to 672 years, 7 weeks, 4 days, 7 hours, 11 minutes.
• To count from 1 to 21,138,736,260 would take you about one thousand, three hundred forty-four 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 21138736260 cubic inches would be around 230.4 feet tall.

Recreational maths with 21138736260

• 21138736260 backwards is 06263783112
• The number of decimal digits it has is: 11
• The sum of 21138736260's digits is 39
• More coming soon!