21051407520

Names of 21051407520

• Cardinal: 21051407520 can be written as Twenty-one billion, fifty-one million, four hundred seven thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.105140752 × 10¹⁰

Factors of 21051407520

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 378

Divisors of 21051407520

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 13 15 16 18 20 22 24 26 27 30 32 33 36 37 39 40 44 45 48 52 54 55 60 65 66 72 74 78 80 81 88 90 96 99 104 108 110 111 117 120 130 132 135 143 144 148 156 160 162 165 176 180 185 195 198 208 216 220 222 234 240 260 264 270 286 288 296 297 307 312 324 330 333 351 352 360 370 390 396 405 407 416 429 432 440 444 468 480 481 495 520 528 540 555 572 585 592 594 614 624 648 660 666 702 715 720 740 780 792 810 814 858 864 880 888 891 921 936 962 990 999 1040 1053 1056 1080 1110 1144 1170 1184 1188 1221 1228 1248 1287 1296 1320 1332 1404 1430 1440 1443 1480 1485 1535 1560 1584 1620 1628 1665 1716 1755 1760 1776 1782 1842 1872 1924 1980 1998 2035 2080 2106 2145 2160 2220 2288 2340 2376 2405 2442 2456 2574 2592 2640 2664 2763 2808 2860 2886 2960 2970 2997 3070 3120 3168 3240 3256 3330 3377 3432 3510 3552 3564 3663 3684 3744 3848 3861 3960 3991 3996 4070 4212 4290 4320 4329 4440 4455 4576 4605 4680 4752 4810 4884 4912 4995 5148 5265 5280 5291 5328 5526 5616 5720 5772 5920 5940 5994 6105 6140 6240 6435 6480 6512 6660 6754 6864 7020 7128 7215 7326 7368 7696 7722 7920 7982 7992 8140 8289 8424 8580 8658 8880 8910 9210 9360 9504 9620 9768 9824 9990 10131 10296 10530 10582 10656 10989 11052 11232 11359 11440 11544 11583 11880 11973 11988 12210 12280 12870 12960 12987 13024 13320 13508 13728 13815 14040 14256 14430 14652 14736 14985 15392 15444 15840 15873 15964 15984 16280 16578 16848 16885 17160 17316 17760 17820 18315 18420 18720 19240 19305 19536 19955 19980 20262 20592 21060 21164 21645 21978 22104 22718 22880 23088 23166 23760 23946 23976 24420 24560 24867 25740 25974 26455 26640 27016 27630 28080 28512 28860 29304 29472 29970 30393 30888 31746 31928 31968 32560 32967 33156 33696 33770 34077 34320 34632 35640 35919 36630 36840 38480 38610 38961 39072 39910 39960 40524 41184 41445 42120 42328 43290 43901 43956 44208 45436 46176 46332 47520 47619 47892 47952 48840 49120 49734 50655 51480 51948 52910 53280 54032 54945 55260 56160 56795 57720 57915 58608 59865 59940 60786 61776 63492 63856 64935 65120 65934 66312 67540 68154 68640 69264 71280 71838 73260 73680 76960 77220 77922 79365 79820 79920 81048 82890 84240 84656 86580 87802 87912 88416 90872 91179 92664 95238 95784 95904 97680 99468 101310 102231 102960 103896 105820 107757 108064 109890 110520 113590 115440 115830 117216 119730 119880 121572 123552 124335 124949 126984 127712 129870 131703 131868 132624 135080 136308 138528 142560 142857 143676 146520 147360 147667 151965 154440 155844 158730 159640 159840 162096 164835 165780 168480 169312 170385 173160 175604 175824 179595 181744 182358 185328 190476 191568 194805 195360 198936 202620 204462 205920 207792 211640 215514 219505 219780 221040 227180 230880 231660 238095 239460 239760 243144 248670 249898 253968 259740 263406 263736 265248 270160 272616 273537 285714 287352 293040 295334 303930 306693 308880 311688 317460 319280 323271 324192 329670 331560 340770 346320 351208 351648 359190 363488 364716 370656 374847 380952 383136 389610 395109 397872 405240 408924 415584 423280 428571 431028 439010 439560 442080 443001 454360 455895 463320 476190 478920 479520 486288 497340 499796 507936 511155 519480 526812 527472 538785 540320 545232 547074 571428 574704 586080 590668 607860 613386 617760 623376 624745 634920 638560 646542 658515 659340 663120 681540 692640 702416 714285 718380 729432 738335 749694 761904 779220 790218 795744 810480 817848 846560 857142 862056 878020 879120 886002 908720 911790 920079 926640 952380 957840 972576 994680 999592 1022310 1038960 1053624 1054944 1077570 1090464 1094148 1124541 1142856 1149408 1181336 1185327 1215720 1226772 1246752 1249490 1269840 1293084 1317030 1318680 1326240 1329003 1363080 1367685 1404832 1428570 1436760 1458864 1476670 1499388 1523808 1533465 1558440 1580436 1616355 1620960 1624337 1635696 1714284 1724112 1756040 1758240 1772004 1817440 1823580 1840158 1853280 1874235 1904760 1915680 1975545 1989360 1999184 2044620 2077920 2107248 2142855 2155140 2188296 2215005 2249082 2285712 2362672 2370654 2431440 2453544 2498980 2539680 2586168 2634060 2637360 2658006 2726160 2735370 2857140 2873520 2917728 2953340 2998776 3066930 3116880 3160872 3232710 3248674 3271392 3373623 3428568 3448224 3512080 3544008 3555981 3647160 3680316 3748470 3809520 3951090 3978720 3987009 3998368 4089240 4214496 4285710 4310280 4376592 4430010 4498164 4571424 4600395 4725344 4741308 4862880 4873011 4907088 4997960 5172336 5268120 5274720 5316012 5452320 5470740 5622705 5714280 5747040 5906680 5926635 5997552 6133860 6233760 6321744 6465420 6497348 6645015 6747246 6857136 7024160 7088016 7111962 7294320 7360632 7496940 7619040 7902180 7974018 8121685 8178480 8571420 8620560 8753184 8860020 8996328 9200790 9482616 9746022 9814176 9995920 10120869 10344672 10536240 10632024 10941480 11245410 11428560 11813360 11853270 11961027 11995104 12267720 12643488 12930840 12994696 13290030 13494492 13714272 14176032 14223924 14588640 14619033 14721264 14993880 15804360 15948036 16243370 16356960 16868115 17142840 17241120 17720040 17779905 17992656 18401580 18965232 19492044 19935045 19991840 20241738 21072480 21264048 21882960 22490820 22857120 23626720 23706540 23922054 24365055 24535440 25861680 25989392 26580060 26988984 28447848 29238066 29442528 29987760 31608720 31896072 32486740 33736230 34285680 35440080 35559810 35985312 36803160 37930464 38984088 39870090 40483476 42528096 43765920 43857099 44981640 47413080 47844108 48730110 49070880 50604345 51723360 51978784 53160120 53977968 56895696 58476132 59805135 59975520 63217440 63792144 64973480 67472460 68571360 70880160 71119620 73095165 73606320 77968176 79740180 80966952 87714198 89963280 94826160 95688216 97460220 101208690 106320240 107955936 113791392 116952264 119610270 127584288 129946960 131571297 134944920 142239240 146190330 147212640 155936352 159480360 161933904 175428396 179926560 189652320 191376432 194920440 202417380 212640480 219285495 233904528 239220540 259893920 263142594 269889840 284478480 292380660 318960720 323867808 350856792 382752864 389840880 404834760 438570990 467809056 478441080 526285188 539779680 568956960 584761320 637921440 657856485 701713584 779681760 809669520 877141980 956882160 1052570376 1169522640 1315712970 1403427168 1619339040 1754283960 1913764320 2105140752 2339045280 2631425940 3508567920 4210281504 5262851880 7017135840 10525703760 21051407520
• Sum of all divisors σ(n): 89933348736
• Sum of proper divisors (its aliquot sum) s(n): 68881941216
• 21051407520 is an abundant number, because the sum of its proper divisors (68881941216) is greater than itself. Its abundance is 47830533696

Bases of 21051407520

• Binary: 10011100110110000101111110010100000₂
• Hexadecimal: 0x4E6C2FCA0
• Base-36: 9O5GQ00

Squares and roots of 21051407520

• 21051407520 squared (21051407520²) is 443161758573112550400
• 21051407520 cubed (21051407520³) is 9329178777002446013296939008000
• The square root of 21051407520 is 145091.0318386357
• The cube root of 21051407520 is 2761.1736029711

Scales and comparisons

• 21,051,407,520 seconds is equal to 669 years, 19 weeks, 1 day, 13 hours, 12 minutes.
• To count from 1 to 21,051,407,520 would take you about one thousand, three hundred thirty-eight 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 21051407520 cubic inches would be around 230.1 feet tall.

Recreational maths with 21051407520

• 21051407520 backwards is 02570415012
• 21051407520 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21051407520's digits is 27
• More coming soon!