21490943640

Names of 21490943640

• Cardinal: 21490943640 can be written as Twenty-one billion, four hundred ninety million, nine hundred forty-three thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.149094364 × 10¹⁰

Factors of 21490943640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 558

Divisors of 21490943640

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 47 60 94 97 120 141 163 188 194 235 241 282 291 326 376 388 470 482 485 489 564 582 652 705 723 776 815 940 964 970 978 1128 1164 1205 1304 1410 1446 1455 1630 1880 1928 1940 1956 2328 2410 2445 2820 2892 2910 3260 3615 3880 3912 4559 4820 4890 5640 5784 5820 6520 7230 7661 9118 9640 9780 11327 11640 13677 14460 15322 15811 18236 19560 22654 22795 22983 23377 27354 28920 30644 31622 33981 36472 38305 39283 45308 45590 45966 46754 47433 54708 56635 61288 63244 67962 68385 70131 76610 78566 79055 90616 91180 91932 93508 94866 109416 113270 114915 116885 117849 126488 135924 136770 140262 153220 157132 158110 169905 182360 183864 187016 189732 196415 226540 229830 233770 235698 237165 271848 273540 280524 306440 314264 316220 339810 350655 379464 392830 453080 459660 467540 471396 474330 547080 561048 589245 632440 679620 701310 743117 785660 919320 935080 942792 948660 1098719 1178490 1359240 1402620 1486234 1571320 1846301 1897320 2197438 2229351 2356980 2805240 2972468 3296157 3692602 3715585 3810451 4394876 4458702 4713960 5493595 5538903 5944936 6592314 7385204 7431170 7620902 8789752 8917404 9231505 10987190 11077806 11146755 11431353 13184628 14770408 14862340 15241804 16480785 17834808 18463010 19052255 21974380 22155612 22293510 22862706 26369256 27694515 29724680 30483608 32961570 36926020 38104510 43948760 44311224 44587020 45725412 55389030 57156765 65923140 73852040 76209020 89174040 91450824 110778060 114313530 131846280 152418040 179091197 221556120 228627060 358182394 457254120 537273591 716364788 895455985 1074547182 1432729576 1790911970 2149094364 2686367955 3581823940 4298188728 5372735910 7163647880 10745471820 21490943640
• Sum of all divisors σ(n): 67209246720
• Sum of proper divisors (its aliquot sum) s(n): 45718303080
• 21490943640 is an abundant number, because the sum of its proper divisors (45718303080) is greater than itself. Its abundance is 24227359440

Bases of 21490943640

• Binary: 10100000000111101011100011010011000₂
• Hexadecimal: 0x500F5C698
• Base-36: 9VF5I8O

Squares and roots of 21490943640

• 21490943640 squared (21490943640²) is 461860658537656449600
• 21490943640 cubed (21490943640³) is 9925821382166059576036100544000
• The square root of 21490943640 is 146597.8978021173
• The cube root of 21490943640 is 2780.2584011831

Scales and comparisons

• 21,490,943,640 seconds is equal to 683 years, 17 weeks, 6 days, 18 hours, 34 minutes.
• To count from 1 to 21,490,943,640 would take you about one thousand, three hundred sixty-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 21490943640 cubic inches would be around 231.7 feet tall.

Recreational maths with 21490943640

• 21490943640 backwards is 04634909412
• The number of decimal digits it has is: 11
• The sum of 21490943640's digits is 42
• More coming soon!