21579004980

Names of 21579004980

• Cardinal: 21579004980 can be written as Twenty-one billion, five hundred seventy-nine million, four thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 2.157900498 × 10¹⁰

Factors of 21579004980

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 514

Divisors of 21579004980

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 29 30 36 39 45 52 58 60 61 65 78 87 90 116 117 122 130 145 156 169 174 180 183 195 234 244 260 261 290 305 338 348 366 377 390 401 435 468 507 522 549 580 585 610 676 732 754 780 793 802 845 870 915 1014 1044 1098 1131 1170 1203 1220 1305 1508 1521 1586 1604 1690 1740 1769 1830 1885 2005 2028 2196 2262 2340 2379 2406 2535 2610 2745 3042 3172 3380 3393 3538 3609 3660 3770 3965 4010 4524 4758 4812 4901 5070 5213 5220 5307 5490 5655 6015 6084 6786 7076 7137 7218 7540 7605 7930 8020 8845 9516 9802 10140 10309 10426 10614 10980 11310 11629 11895 12030 13572 14274 14436 14703 15210 15639 15860 15921 16965 17690 18045 19604 20618 20852 21228 22620 22997 23258 23790 24060 24461 24505 26065 26535 28548 29406 30420 30927 31278 31842 33930 34887 35380 35685 36090 41236 44109 45994 46516 46917 47580 48922 49010 51545 52130 53070 58145 58812 61854 62556 63684 67769 67860 68991 69774 71370 72180 73383 73515 78195 79605 88218 91988 92781 93834 97844 98020 103090 104260 104661 106140 114985 116290 122305 123708 135538 137982 139548 142740 146766 147030 151177 154635 156390 159210 174435 176436 185562 187668 203307 206180 206973 209322 220149 220545 229970 232580 234585 244610 271076 275964 293532 294060 298961 302354 309270 312780 317993 318420 338845 344955 348870 366915 371124 406614 413946 418644 440298 441090 453531 459940 463905 469170 489220 523305 597922 604708 609921 618540 635986 677690 689910 697740 709369 733830 755885 813228 827892 880596 882180 896883 907062 927810 938340 953979 1016535 1034865 1046610 1100745 1195844 1219842 1271972 1355380 1360593 1379820 1418738 1467660 1494805 1511770 1589965 1793766 1814124 1855620 1907958 1965301 2033070 2069730 2093220 2128107 2201490 2267655 2439684 2690649 2721186 2837476 2861937 2989610 3023540 3049605 3179930 3546845 3587532 3815916 3930602 4066140 4133909 4139460 4256214 4402980 4484415 4535310 4769895 5381298 5442372 5723874 5895903 5979220 6099210 6359860 6384321 6802965 7093690 7861204 8267818 8512428 8968830 9070620 9221797 9539790 9826505 10640535 10762596 11447748 11791806 12198420 12401727 12768642 13453245 13605930 14187380 14309685 16535636 17687709 17937660 18443594 19079580 19653010 20669545 21281070 23583612 24803454 25537284 26906490 27211860 27665391 28619370 29479515 31921605 35375418 36887188 37205181 39306020 41339090 42562140 46108985 49606908 53812980 55330782 57238740 58959030 62008635 63843210 70750836 74410362 82678180 82996173 88438545 92217970 110661564 117918060 119883361 124017270 127686420 138326955 148820724 165992346 176877090 184435940 186025905 239766722 248034540 276653910 331984692 353754180 359650083 372051810 414980865 479533444 553307820 599416805 719300166 744103620 829961730 1078950249 1198833610 1438600332 1659923460 1798250415 2157900498 2397667220 3596500830 4315800996 5394751245 7193001660 10789502490 21579004980
• Sum of all divisors σ(n): 74710686960
• Sum of proper divisors (its aliquot sum) s(n): 53131681980
• 21579004980 is an abundant number, because the sum of its proper divisors (53131681980) is greater than itself. Its abundance is 31552677000

Bases of 21579004980

• Binary: 10100000110001101010111110000110100₂
• Hexadecimal: 0x506357C34
• Base-36: 9WVKYT0

Squares and roots of 21579004980

• 21579004980 squared (21579004980²) is 465653455926864800400
• 21579004980 cubed (21579004980³) is 10048338244400026043618305992000
• The square root of 21579004980 is 146897.9406935305
• The cube root of 21579004980 is 2784.0506905283

Scales and comparisons

• 21,579,004,980 seconds is equal to 686 years, 7 weeks, 4 days, 3 minutes.
• To count from 1 to 21,579,004,980 would take you about one thousand, three hundred seventy-two 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 21579004980 cubic inches would be around 232 feet tall.

Recreational maths with 21579004980

• 21579004980 backwards is 08940097512
• 21579004980 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21579004980's digits is 45
• More coming soon!