21125757240

Names of 21125757240

• Cardinal: 21125757240 can be written as Twenty-one billion, one hundred twenty-five million, seven hundred fifty-seven thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.112575724 × 10¹⁰

Factors of 21125757240

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 441

Divisors of 21125757240

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 19 20 21 24 28 30 31 35 36 38 40 42 43 45 56 57 60 62 63 70 72 76 84 86 90 93 95 105 114 120 124 126 129 133 140 152 155 168 171 172 180 186 190 210 215 217 228 248 252 258 266 279 280 285 301 310 315 331 342 344 360 372 380 387 399 420 430 434 456 465 504 516 532 558 570 589 602 620 630 645 651 662 665 684 744 760 774 798 817 840 855 860 868 903 930 993 1032 1064 1085 1116 1140 1178 1197 1204 1240 1260 1290 1302 1324 1330 1333 1368 1395 1505 1548 1596 1634 1655 1710 1720 1736 1767 1806 1860 1935 1953 1986 1995 2170 2232 2280 2317 2356 2394 2408 2451 2520 2580 2604 2648 2660 2666 2709 2790 2945 2979 3010 3096 3192 3255 3268 3310 3420 3534 3612 3720 3870 3906 3972 3990 3999 4085 4123 4340 4515 4634 4712 4788 4902 4965 5160 5208 5301 5320 5332 5418 5580 5719 5890 5958 5985 6020 6289 6510 6536 6620 6665 6840 6951 7068 7224 7353 7740 7812 7944 7980 7998 8170 8246 8680 8835 9030 9268 9331 9576 9765 9804 9930 10261 10602 10664 10836 11160 11438 11585 11780 11916 11970 11997 12040 12255 12369 12578 13020 13240 13330 13545 13902 14136 14233 14706 14895 15480 15624 15960 15996 16340 16492 17157 17670 18060 18536 18662 18867 19530 19608 19860 19995 20522 20615 20853 21204 21672 22876 23170 23560 23832 23940 23994 24510 24738 25156 25327 26040 26505 26660 27090 27804 27993 28466 28595 29412 29790 30783 31445 31992 32680 32984 34314 34755 35340 36120 36765 37107 37324 37734 39060 39720 39990 41044 41230 41706 42408 42699 44023 45752 46340 46655 47880 47988 49020 49476 50312 50654 51305 51471 53010 53320 54180 55608 55986 56601 56932 57190 58824 59580 59985 61566 61845 62890 68628 69510 70680 71165 71827 73530 74214 74648 75468 75981 78120 79980 82088 82460 83412 83979 85398 85785 88046 92349 92680 93310 94335 95976 98040 98952 99631 101308 102610 102942 104265 106020 108360 111972 113202 113864 114380 119160 119970 123132 123690 125780 126635 128097 132069 137256 139020 139965 142330 143654 147060 148428 150936 151962 153915 159960 164920 166824 167958 170796 171570 176092 177289 184698 185535 186620 188670 194959 199262 202616 205220 205884 208530 212040 213495 215481 220115 223944 226404 227943 228760 239940 246264 247380 251560 253270 256194 257355 264138 270427 278040 279930 283005 284660 287308 294120 296856 298893 303924 307830 335916 341592 343140 352184 354578 359135 369396 371070 373240 377340 379905 389918 396207 398524 410440 411768 417060 419895 426990 430962 440230 441223 452808 455886 461745 479880 494760 498155 506540 512388 514710 528276 531867 540854 559860 566010 569320 574616 584877 597786 607848 615660 640485 646443 660345 671832 686280 709156 718270 738792 742140 754680 759810 779836 792414 797048 811281 834120 839790 853980 861924 880460 882446 886445 896679 911772 923490 974795 996310 1013080 1024776 1029420 1056552 1063734 1077405 1081708 1119720 1132020 1139715 1169754 1195572 1231320 1280970 1292886 1320690 1323669 1352135 1364713 1418312 1436540 1484280 1494465 1519620 1559672 1584828 1595601 1622562 1679580 1707960 1723848 1754631 1760920 1764892 1772890 1793358 1823544 1846980 1892989 1949590 1981035 1992620 2058840 2127468 2154810 2163416 2206115 2264040 2279430 2339508 2391144 2433843 2561940 2585772 2641380 2647338 2659335 2704270 2729426 2873080 2924385 2988930 3039240 3088561 3169656 3191202 3232215 3245124 3359160 3509262 3529784 3545780 3586716 3693960 3785978 3899180 3962070 3971007 3985240 4056405 4094139 4254936 4309620 4412230 4483395 4558860 4679016 4867686 5123880 5171544 5282760 5294676 5318670 5408540 5458852 5678967 5848770 5977860 6177122 6382404 6464430 6490248 6618345 6823565 7018524 7091560 7173432 7571956 7798360 7924140 7942014 7978005 8112810 8188278 8383237 8619240 8773155 8824460 8966790 9117720 9265683 9464945 9735372 10589352 10637340 10817080 10917704 11357934 11697540 11955720 12169215 12282417 12354244 12764808 12928860 13236690 13647130 14037048 15143912 15442805 15848280 15884028 15956010 16225620 16376556 16766474 17036901 17546310 17648920 17933580 18531366 18929890 19470744 19855035 20470695 21274680 22715868 23395080 24338430 24564834 24708488 25149711 25857720 26473380 27294260 27797049 28394835 30885610 31768056 31912020 32451240 32753112 33532948 34073802 35092620 35867160 37062732 37859780 39710070 40941390 41916185 45431736 46328415 48676860 49129668 50299422 52946760 54588520 55594098 56789670 58682659 61412085 61771220 63824040 67065896 68147604 70185240 74125464 75449133 75719560 79420140 81882780 83832370 85184505 92656830 97353720 98259336 100598844 111188196 113579340 117365318 122824170 123542440 125748555 136295208 138985245 150898266 158840280 163765560 167664740 170369010 176047977 185313660 201197688 222376392 227158680 234730636 245648340 251497110 277970490 293413295 301796532 335329480 340738020 352095954 370627320 377245665 469461272 491296680 502994220 528143931 555940980 586826590 603593064 681476040 704191908 754491330 880239885 1005988440 1056287862 1111881960 1173653180 1408383816 1508982660 1760479770 2112575724 2347306360 2640719655 3017965320 3520959540 4225151448 5281439310 7041919080 10562878620 21125757240
• Sum of all divisors σ(n): 87507763200
• Sum of proper divisors (its aliquot sum) s(n): 66382005960
• 21125757240 is an abundant number, because the sum of its proper divisors (66382005960) is greater than itself. Its abundance is 45256248720

Bases of 21125757240

• Binary: 10011101011001100010111100100111000₂
• Hexadecimal: 0x4EB317938
• Base-36: 9PDQAM0

Squares and roots of 21125757240

• 21125757240 squared (21125757240²) is 446297618963412417600
• 21125757240 cubed (21125757240³) is 9428375155011071176219103424000
• The square root of 21125757240 is 145347.0234989351
• The cube root of 21125757240 is 2764.4204368941

Scales and comparisons

• 21,125,757,240 seconds is equal to 671 years, 38 weeks, 1 day, 1 hour, 54 minutes.
• To count from 1 to 21,125,757,240 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 21125757240 cubic inches would be around 230.4 feet tall.

Recreational maths with 21125757240

• 21125757240 backwards is 04275752112
• 21125757240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21125757240's digits is 36
• More coming soon!