21311924640

Names of 21311924640

• Cardinal: 21311924640 can be written as Twenty-one billion, three hundred eleven million, nine hundred twenty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.131192464 × 10¹⁰

Factors of 21311924640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 456

Divisors of 21311924640

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 41 48 60 62 80 82 93 96 120 123 124 155 160 164 181 186 193 205 240 246 248 310 328 362 372 386 410 465 480 492 496 543 579 615 620 656 724 744 772 820 905 930 965 984 992 1086 1158 1230 1240 1271 1312 1448 1488 1544 1640 1810 1860 1930 1968 2172 2316 2460 2480 2542 2715 2895 2896 2976 3088 3280 3620 3720 3813 3860 3936 4344 4632 4920 4960 5084 5430 5611 5790 5792 5983 6176 6355 6560 7240 7421 7440 7626 7720 7913 8688 9264 9840 10168 10860 11222 11580 11966 12710 14480 14842 14880 15252 15440 15826 16833 17376 17949 18528 19065 19680 20336 21720 22263 22444 23160 23739 23932 25420 28055 28960 29684 29915 30504 30880 31652 33666 34933 35898 37105 38130 39565 40672 43440 44526 44888 46320 47478 47864 50840 56110 59368 59830 61008 63304 67332 69866 71796 74210 76260 79130 84165 86880 89052 89745 89776 92640 94956 95728 101680 104799 111315 112220 118695 118736 119660 122016 126608 134664 139732 143592 148420 152520 158260 168330 174665 178104 179490 179552 189912 191456 203360 209598 222630 224440 230051 237390 237472 239320 245303 253216 269328 279464 287184 296840 305040 316520 336660 349330 356208 358980 379824 419196 445260 448880 460102 474780 478640 490606 523995 538656 558928 574368 593680 610080 633040 673320 690153 698660 712416 717960 735909 759648 838392 890520 897760 920204 949560 957280 981212 1047990 1082923 1117856 1150255 1187360 1226515 1266080 1346640 1380306 1397320 1432253 1435920 1471818 1676784 1781040 1840408 1899120 1962424 2095980 2165846 2300510 2453030 2693280 2760612 2794640 2864506 2871840 2943636 3248769 3353568 3450765 3562080 3679545 3680816 3798240 3924848 4191960 4296759 4331692 4601020 4906060 5414615 5521224 5589280 5729012 5887272 6497538 6901530 7161265 7359090 7361632 7849696 8383920 8593518 8663384 9202040 9812120 10829230 11042448 11458024 11774544 12995076 13803060 14322530 14718180 16243845 16767840 17187036 17326768 18404080 19624240 21483795 21658460 22084896 22916048 23549088 25990152 27606120 28645060 29436360 32487690 34374072 34653536 36808160 39248480 42967590 43316920 44399843 45832096 51980304 55212240 57290120 58872720 64975380 68748144 85935180 86633840 88799686 103960608 110424480 114580240 117745440 129950760 133199529 137496288 171870360 173267680 177599372 221999215 229160480 259901520 266399058 343740720 355198744 443998430 519803040 532798116 665997645 687481440 710397488 887996860 1065596232 1331995290 1420794976 1775993720 2131192464 2663990580 3551987440 4262384928 5327981160 7103974880 10655962320 21311924640
• Sum of all divisors σ(n): 71750375424
• Sum of proper divisors (its aliquot sum) s(n): 50438450784
• 21311924640 is an abundant number, because the sum of its proper divisors (50438450784) is greater than itself. Its abundance is 29126526144

Bases of 21311924640

• Binary: 10011110110010010100010100110100000₂
• Hexadecimal: 0x4F64A29A0
• Base-36: 9SGKIAO

Squares and roots of 21311924640

• 21311924640 squared (21311924640²) is 454198131861039129600
• 21311924640 cubed (21311924640³) is 9679836357851248882126393344000
• The square root of 21311924640 is 145986.0426205191
• The cube root of 21311924640 is 2772.5170394571

Scales and comparisons

• 21,311,924,640 seconds is equal to 677 years, 33 weeks, 6 days, 19 hours, 4 minutes.
• To count from 1 to 21,311,924,640 would take you about one thousand, three hundred fifty-five 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 21311924640 cubic inches would be around 231 feet tall.

Recreational maths with 21311924640

• 21311924640 backwards is 04642911312
• The number of decimal digits it has is: 11
• The sum of 21311924640's digits is 33
• More coming soon!