21125307720

Names of 21125307720

• Cardinal: 21125307720 can be written as Twenty-one billion, one hundred twenty-five million, three hundred seven thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.112530772 × 10¹⁰

Factors of 21125307720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 122

Divisors of 21125307720

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 17 20 22 23 24 30 33 34 40 44 46 51 55 60 61 66 68 69 85 88 92 102 110 115 120 121 122 132 136 138 165 170 183 184 187 204 220 230 242 244 253 255 264 276 305 330 340 345 363 366 374 391 408 440 460 484 488 506 510 552 561 605 610 660 671 680 690 726 732 748 759 782 915 920 935 968 1012 1020 1037 1122 1173 1210 1220 1265 1320 1342 1380 1403 1452 1464 1496 1518 1564 1815 1830 1870 1955 2013 2024 2040 2057 2074 2244 2346 2420 2440 2530 2684 2760 2783 2805 2806 2904 3036 3111 3128 3355 3630 3660 3721 3740 3795 3910 4026 4114 4148 4209 4301 4488 4692 4840 5060 5185 5368 5566 5610 5612 5865 6072 6171 6222 6710 7015 7260 7320 7381 7442 7480 7590 7820 8052 8228 8296 8349 8418 8602 9384 10065 10120 10285 10370 11132 11163 11220 11224 11407 11730 12342 12444 12903 13420 13915 14030 14520 14762 14884 15180 15433 15555 15640 16104 16456 16698 16836 17204 18605 20130 20570 20740 21045 21505 22143 22264 22326 22440 22814 23460 23851 24684 24888 25806 26840 27830 28060 29524 29768 30360 30855 30866 31110 33396 33672 34221 34408 36905 37210 40260 40931 41140 41480 41745 42090 43010 44286 44652 45628 46299 46920 47311 47702 49368 51612 55660 55815 56120 57035 59048 61710 61732 62220 63257 64515 66792 68442 71553 73810 74420 77165 80520 81862 82280 83490 84180 85583 86020 88572 89304 91256 92598 94622 95404 103224 110715 111320 111630 114070 119255 122793 123420 123464 124440 125477 126514 129030 136884 141933 143106 147620 148840 154330 163724 166980 168360 169763 171105 171166 172040 177144 185196 189244 189771 190808 204655 221430 223260 228140 231495 236555 238510 245586 246840 250954 253028 256749 258060 262361 273768 283866 286212 295240 308660 316285 327448 333960 339526 342210 342332 357765 370392 376431 378488 379542 409310 427915 442860 446520 450241 456280 462990 473110 477020 491172 501908 506056 509289 513498 516120 524722 567732 572424 613965 617320 627385 632570 679052 684420 684664 695827 709665 715530 752862 759084 787083 818620 848815 855830 885720 900482 925980 941413 946220 948855 954040 982344 1003816 1018578 1026996 1049444 1135464 1227930 1254770 1265140 1283745 1311805 1350723 1358104 1368840 1391654 1419330 1431060 1454911 1505724 1518168 1574166 1637240 1697630 1711660 1800964 1851960 1882155 1882826 1892440 1897710 2037156 2053992 2087481 2098888 2251205 2455860 2509540 2530280 2546445 2567490 2623610 2701446 2783308 2824239 2838660 2862120 2885971 2909822 3011448 3148332 3395260 3423320 3479135 3601928 3764310 3765652 3795420 3935415 4074312 4174962 4364733 4502410 4707065 4911720 5019080 5092890 5134980 5247220 5402892 5566616 5648478 5677320 5771942 5819644 6296664 6753615 6790520 6958270 7274555 7528620 7531304 7590840 7654097 7870830 8349924 8657913 8729466 9004820 9414130 10185780 10269960 10355543 10437405 10494440 10805784 11296956 11543884 11639288 13507230 13916540 14121195 14429855 14549110 15057240 15308194 15741660 16004021 16699848 17315826 17458932 18009640 18828260 20371560 20711086 20874810 21823665 22593912 22962291 23087768 27014460 27833080 28242390 28859710 29098220 30616388 31066629 31483320 32008042 34631652 34917864 37656520 38270485 41422172 41749620 43289565 43647330 45924582 48012063 51777715 54028920 56484780 57719420 58196440 61232776 62133258 64016084 69263304 76540970 80020105 82844344 83499240 86579130 87294660 91849164 96024126 103555430 112969560 114811455 115438840 124266516 128032168 153081940 155333145 160040210 173158260 174589320 176044231 183698328 192048252 207110860 229622910 240060315 248533032 306163880 310666290 320080420 346316520 352088462 384096504 414221720 459245820 480120630 528132693 621332580 640160840 704176924 880221155 918491640 960241260 1056265386 1242665160 1408353848 1760442310 1920482520 2112530772 2640663465 3520884620 4225061544 5281326930 7041769240 10562653860 21125307720
• Sum of all divisors σ(n): 78248177280
• Sum of proper divisors (its aliquot sum) s(n): 57122869560
• 21125307720 is an abundant number, because the sum of its proper divisors (57122869560) is greater than itself. Its abundance is 35997561840

Bases of 21125307720

• Binary: 10011101011001010101001110101001000₂
• Hexadecimal: 0x4EB2A9D48
• Base-36: 9PDGNRC

Squares and roots of 21125307720

• 21125307720 squared (21125307720²) is 446278626264691598400
• 21125307720 cubed (21125307720³) is 9427773308700484187098659648000
• The square root of 21125307720 is 145345.4771226129
• The cube root of 21125307720 is 2764.4008293745

Scales and comparisons

• 21,125,307,720 seconds is equal to 671 years, 37 weeks, 2 days, 21 hours, 2 minutes.
• To count from 1 to 21,125,307,720 would take you about one thousand, three hundred forty-three 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 21125307720 cubic inches would be around 230.4 feet tall.

Recreational maths with 21125307720

• 21125307720 backwards is 02770352112
• 21125307720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21125307720's digits is 30
• More coming soon!