21045554040

Names of 21045554040

• Cardinal: 21045554040 can be written as Twenty-one billion, forty-five million, five hundred fifty-four thousand and forty.

Scientific notation

• Scientific notation: 2.104555404 × 10¹⁰

Factors of 21045554040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 77

Divisors of 21045554040

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 29 30 31 35 40 42 56 58 60 62 70 84 87 93 105 116 120 124 140 145 155 168 174 186 203 210 217 232 248 280 290 310 348 372 406 420 434 435 465 580 609 620 651 696 744 812 840 841 868 870 899 930 961 1015 1085 1160 1218 1240 1302 1624 1682 1736 1740 1798 1860 1922 2030 2170 2436 2523 2604 2697 2883 3045 3255 3364 3480 3596 3720 3844 4060 4205 4340 4495 4805 4872 5046 5208 5394 5766 5887 6090 6293 6510 6727 6728 7192 7688 8120 8410 8680 8990 9610 10092 10788 11532 11774 12180 12586 12615 13020 13454 13485 14415 16820 17661 17980 18879 19220 20181 20184 21576 23064 23548 24360 25172 25230 26040 26071 26908 26970 27869 28830 29435 29791 31465 33635 33640 35322 35960 37758 38440 40362 47096 50344 50460 52142 53816 53940 55738 57660 58870 59582 62930 67270 70644 75516 78213 80724 83607 88305 89373 94395 100905 100920 104284 107880 111476 115320 117740 119164 125860 130355 134540 139345 141288 148955 151032 156426 161448 167214 176610 178746 182497 188790 195083 201810 208537 208568 222952 235480 238328 251720 260710 269080 278690 297910 312852 334428 353220 357492 364994 377580 390166 391065 403620 417074 418035 446865 521420 547491 557380 585249 595820 625611 625704 668856 706440 714984 729988 755160 780332 782130 807240 808201 834148 836070 863939 893730 912485 975415 1042685 1042840 1094982 1114760 1170498 1191640 1251222 1459976 1560664 1564260 1616402 1668296 1672140 1727878 1787460 1824970 1950830 2085370 2189964 2340996 2424603 2502444 2591817 2737455 2926245 3128055 3128520 3232804 3344280 3455756 3574920 3649940 3901660 4041005 4170740 4319695 4379928 4681992 4849206 5004888 5183634 5474910 5657407 5852490 6047573 6256110 6465608 6911512 7299880 7803320 8082010 8341480 8639390 9698412 10367268 10949820 11314814 11704980 12095146 12123015 12512220 12959085 16164020 16972221 17278780 18142719 19396824 20734536 21899640 22629628 23409960 24190292 24246030 25024440 25054231 25918170 28287035 30237865 32328040 33944442 34557560 36285438 45259256 48380584 48492060 50108462 51836340 56574070 60475730 67888884 72570876 75162693 84861105 90713595 96984120 100216924 103672680 113148140 120951460 125271155 135777768 145141752 150325386 169722210 175379617 181427190 200433848 226296280 241902920 250542310 300650772 339444420 350759234 362854380 375813465 501084620 526138851 601301544 678888840 701518468 725708760 751626930 876898085 1002169240 1052277702 1403036936 1503253860 1753796170 2104555404 2630694255 3006507720 3507592340 4209110808 5261388510 7015184680 10522777020 21045554040
• Sum of all divisors σ(n): 77221048320
• Sum of proper divisors (its aliquot sum) s(n): 56175494280
• 21045554040 is an abundant number, because the sum of its proper divisors (56175494280) is greater than itself. Its abundance is 35129940240

Bases of 21045554040

• Binary: 10011100110011010011010101101111000₂
• Hexadecimal: 0x4E669AB78
• Base-36: 9O1Z9FC

Squares and roots of 21045554040

• 21045554040 squared (21045554040²) is 442915344850560321600
• 21045554040 cubed (21045554040³) is 9321398825197702972512579264000
• The square root of 21045554040 is 145070.8586863675
• The cube root of 21045554040 is 2760.9176585217

Scales and comparisons

• 21,045,554,040 seconds is equal to 669 years, 9 weeks, 3 days, 19 hours, 14 minutes.
• To count from 1 to 21,045,554,040 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 21045554040 cubic inches would be around 230.1 feet tall.

Recreational maths with 21045554040

• 21045554040 backwards is 04045554012
• 21045554040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21045554040's digits is 30
• More coming soon!