21556021740

Names of 21556021740

• Cardinal: 21556021740 can be written as Twenty-one billion, five hundred fifty-six million, twenty-one thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.155602174 × 10¹⁰

Factors of 21556021740

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 142

Divisors of 21556021740

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 15 19 20 22 30 31 33 38 44 55 57 60 62 66 71 76 93 95 110 114 121 124 132 142 155 165 186 190 209 213 220 228 242 284 285 310 330 341 355 363 372 380 418 426 465 484 570 589 605 620 627 660 682 710 726 781 836 852 930 1023 1045 1065 1140 1178 1210 1254 1349 1364 1420 1452 1562 1705 1767 1815 1860 2046 2090 2130 2201 2299 2343 2356 2420 2508 2698 2945 3124 3135 3410 3534 3630 3751 3905 4047 4092 4180 4260 4402 4598 4686 5041 5115 5396 5890 6270 6479 6603 6745 6820 6897 7068 7260 7502 7810 8094 8591 8804 8835 9196 9372 10082 10230 11005 11253 11495 11715 11780 12540 12958 13206 13490 13794 14839 15004 15123 15620 16188 17182 17670 18755 19437 20164 20235 20460 22010 22506 22990 23430 24211 25205 25773 25916 26412 26980 27588 29678 30246 32395 33015 34364 34485 35340 37510 38874 40470 41819 42955 44020 44517 45012 45980 46860 48422 50410 51546 55451 56265 59356 60492 64790 66030 68970 71269 72633 74195 75020 75615 77748 80940 83638 85910 89034 95779 96844 97185 100820 103092 110902 112530 121055 125457 128865 129580 132060 137940 142538 145266 148390 151230 156271 163229 166353 167276 171820 178068 191558 194370 209095 213807 221804 222585 225060 242110 250914 257730 266321 277255 285076 287337 290532 296780 302460 312542 326458 332706 356345 363165 383116 388740 418190 427614 445170 460009 468813 478895 484220 489687 501828 515460 532642 554510 574674 609961 625084 627285 652916 665412 712690 726330 781355 798963 816145 831765 836380 855228 890340 920018 937626 957790 979374 1053569 1065284 1069035 1109020 1149348 1219922 1254570 1331605 1380027 1425380 1436685 1452660 1562710 1597926 1632290 1663530 1718981 1829883 1840036 1875252 1915580 1958748 2107138 2138070 2300045 2344065 2439844 2448435 2509140 2663210 2760054 2873370 2969149 3049805 3125420 3160707 3195852 3264580 3327060 3437962 3659766 3994815 4214276 4276140 4600090 4688130 4896870 5060099 5156943 5267845 5326420 5520108 5746740 5938298 6099610 6321414 6875924 6900135 7319532 7989630 8594905 8907447 9149415 9200180 9376260 9793740 10120198 10313886 10535690 11589259 11876596 12199220 12642828 13800270 14845745 15180297 15803535 15979260 17189810 17814894 18298830 18908791 20240396 20627772 21071380 23178518 25300495 25784715 27600540 29691490 30360594 31607070 32660639 34379620 34767777 35629788 36597660 37817582 44537235 46357036 50600990 51569430 56726373 57946295 59382980 60721188 63214140 65321278 69535554 75635164 75901485 89074470 94543955 97981917 101201980 103138860 113452746 115892590 130642556 139071108 151802970 163303195 173838885 178148940 189087910 195963834 226905492 231785180 283631865 303605940 326606390 347677770 359267029 378175820 391927668 489909585 567263730 653212780 695355540 718534058 979819170 1077801087 1134527460 1437068116 1796335145 1959638340 2155602174 3592670290 4311204348 5389005435 7185340580 10778010870 21556021740
• Sum of all divisors σ(n): 73116718080
• Sum of proper divisors (its aliquot sum) s(n): 51560696340
• 21556021740 is an abundant number, because the sum of its proper divisors (51560696340) is greater than itself. Its abundance is 30004674600

Bases of 21556021740

• Binary: 10100000100110101101100100111101100₂
• Hexadecimal: 0x504D6C9EC
• Base-36: 9WHWCTO

Squares and roots of 21556021740

• 21556021740 squared (21556021740²) is 464662073255352627600
• 21556021740 cubed (21556021740³) is 10016265752845853811911724024000
• The square root of 21556021740 is 146819.6912542729
• The cube root of 21556021740 is 2783.0619326207

Scales and comparisons

• 21,556,021,740 seconds is equal to 685 years, 21 weeks, 3 days, 23 hours, 49 minutes.
• To count from 1 to 21,556,021,740 would take you about one thousand, three hundred seventy 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 21556021740 cubic inches would be around 231.9 feet tall.

Recreational maths with 21556021740

• 21556021740 backwards is 04712065512
• 21556021740 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21556021740's digits is 33
• More coming soon!