21042021840

Names of 21042021840

• Cardinal: 21042021840 can be written as Twenty-one billion, forty-two million, twenty-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.104202184 × 10¹⁰

Factors of 21042021840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 380

Divisors of 21042021840

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 29 30 35 40 42 48 53 56 58 60 70 80 84 87 105 106 112 116 120 140 145 159 168 174 203 210 212 232 240 265 280 281 290 318 336 348 371 406 420 424 435 464 530 560 562 580 609 636 696 742 795 812 840 841 843 848 870 1015 1060 1113 1124 1160 1218 1272 1392 1405 1484 1537 1590 1624 1680 1682 1686 1740 1855 1967 2030 2120 2226 2248 2320 2436 2523 2544 2810 2968 3045 3074 3180 3248 3364 3372 3480 3710 3934 4060 4205 4215 4240 4452 4496 4611 4872 5046 5565 5620 5887 5901 5936 6090 6148 6360 6728 6744 6960 7420 7685 7868 8120 8149 8410 8430 8904 9222 9744 9835 10092 10759 11130 11240 11774 11802 12180 12296 12615 12720 13456 13488 14840 14893 15370 15736 16240 16298 16820 16860 17661 17808 18444 19670 20184 21518 22260 22480 23055 23548 23604 24360 24447 24592 25230 29435 29505 29680 29786 30740 31472 32277 32596 33640 33720 35322 36888 39340 40368 40745 43036 44520 44573 44679 46110 47096 47208 48720 48894 50460 53795 57043 58870 59010 59572 61480 64554 65192 67280 67440 70644 73776 74465 78680 81490 86072 88305 89040 89146 89358 92220 94192 94416 97788 100920 104251 107590 114086 117740 118020 119144 122235 122960 129108 130384 133719 141288 148930 157360 161385 162980 171129 172144 176610 178292 178716 184440 195576 201840 208502 215180 222865 223395 228172 235480 236040 236321 238288 244470 258216 267438 282576 285215 297860 312011 312753 322770 325960 342258 353220 356584 357432 368880 391152 417004 430360 431897 445730 446790 456344 470960 472080 472642 488940 516432 521255 534876 570430 595720 624022 625506 645540 651920 668595 684516 706440 708963 713168 714864 834008 855645 860720 863794 891460 893580 912688 936033 945284 977880 1042510 1069752 1140860 1181605 1191440 1248044 1251012 1291080 1295691 1337190 1369032 1412880 1417926 1560055 1563765 1654247 1668016 1711290 1727588 1782920 1787160 1872066 1890568 1955760 2085020 2139504 2159485 2281720 2363210 2496088 2502024 2582160 2591382 2674380 2738064 2835852 3023279 3120110 3127530 3308494 3422580 3455176 3544815 3565840 3574320 3744132 3781136 4170040 4318970 4563440 4680165 4726420 4962741 4992176 5004048 5182764 5348760 5671704 6046558 6240220 6255060 6478455 6616988 6845160 6910352 7089630 7488264 8271235 8340080 8637940 9069837 9360330 9452840 9925482 10365528 10697520 11343408 12093116 12480440 12510120 12525013 12956910 13233976 13690320 14179260 14976528 15116395 16542470 17275880 18139674 18720660 18905680 19850964 20731056 24186232 24813705 24960880 25020240 25050026 25913820 26467952 28358520 30232790 33084940 34551760 36279348 37441320 37575039 39701928 45349185 48372464 49627410 50100052 51827640 56717040 60465580 62625065 66169880 72558696 74882640 75150078 79403856 87675091 90698370 99254820 100200104 103655280 120931160 125250130 132339760 145117392 150300156 175350182 181396740 187875195 198509640 200400208 241862320 250500260 263025273 300600312 350700364 362793480 375750390 397019280 438375455 501000520 526050546 601200624 701400728 725586960 751500780 876750910 1002001040 1052101092 1315126365 1402801456 1503001560 1753501820 2104202184 2630252730 3006003120 3507003640 4208404368 5260505460 7014007280 10521010920 21042021840
• Sum of all divisors σ(n): 78944875776
• Sum of proper divisors (its aliquot sum) s(n): 57902853936
• 21042021840 is an abundant number, because the sum of its proper divisors (57902853936) is greater than itself. Its abundance is 36860832096

Bases of 21042021840

• Binary: 10011100110001100111100010111010000₂
• Hexadecimal: 0x4E633C5D0
• Base-36: 9NZVJYO

Squares and roots of 21042021840

• 21042021840 squared (21042021840²) is 442766683115036985600
• 21042021840 cubed (21042021840³) is 9316706216130967483402965504000
• The square root of 21042021840 is 145058.6841247363
• The cube root of 21042021840 is 2760.7631894909

Scales and comparisons

• 21,042,021,840 seconds is equal to 669 years, 3 weeks, 4 days, 22 hours, 4 minutes.
• To count from 1 to 21,042,021,840 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 21042021840 cubic inches would be around 230.1 feet tall.

Recreational maths with 21042021840

• 21042021840 backwards is 04812024012
• 21042021840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21042021840's digits is 24
• More coming soon!