21391827027840

Names of 21391827027840

• Cardinal: 21391827027840 can be written as Twenty-one trillion, three hundred ninety-one billion, eight hundred twenty-seven million, twenty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.139182702784 × 10¹³

Factors of 21391827027840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 716084

Divisors of 21391827027840

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 270 288 320 360 384 432 480 540 576 640 720 864 960 1080 1152 1440 1728 1733 1920 2160 2880 3456 3466 4320 5199 5760 6932 8640 8665 10398 13864 15597 17280 17330 20796 25995 27728 31194 34660 41592 46791 51990 55456 62388 69320 77985 83184 93582 103980 110912 124776 138640 155970 166368 187164 207960 221824 233955 249552 277280 311940 332736 374328 415920 467910 499104 554560 623880 665472 714341 748656 831840 935820 998208 1109120 1247760 1428682 1497312 1663680 1871640 1996416 2143023 2495520 2857364 2994624 3327360 3571705 3743280 4286046 4991040 5714728 5989248 6429069 7143410 7486560 8572092 9982080 10715115 11429456 12858138 14286820 14973120 17144184 19287207 21430230 22858912 25716276 28573640 29946240 32145345 34288368 38574414 42860460 45717824 51432552 57147280 64290690 68576736 77148828 85720920 91435648 96436035 102865104 114294560 128581380 137153472 154297656 171441840 192872070 205730208 228589120 257162760 274306944 308595312 342883680 385744140 411460416 457178240 514325520 617190624 685767360 771488280 822920832 1028651040 1234381248 1237952953 1371534720 1542976560 2057302080 2468762496 2475905906 3085953120 3713858859 4114604160 4951811812 6171906240 6189764765 7427717718 9903623624 11141576577 12343812480 12379529530 14855435436 18569294295 19807247248 22283153154 24759059060 29710870872 33424729731 37138588590 39614494496 44566306308 49518118120 55707882885 59421741744 66849459462 74277177180 79228988992 89132612616 99036236240 111415765770 118843483488 133698918924 148554354360 158457977984 167123648655 178265225232 198072472480 222831531540 237686966976 267397837848 297108708720 334247297310 356530450464 396144944960 445663063080 475373933952 534795675696 594217417440 668494594620 713060900928 792289889920 891326126160 1069591351392 1188434834880 1336989189240 1426121801856 1782652252320 2139182702784 2376869669760 2673978378480 3565304504640 4278365405568 5347956756960 7130609009280 10695913513920 21391827027840
• Sum of all divisors σ(n): 75806544513600
• Sum of proper divisors (its aliquot sum) s(n): 54414717485760
• 21391827027840 is an abundant number, because the sum of its proper divisors (54414717485760) is greater than itself. Its abundance is 33022890457920

Bases of 21391827027840

• Binary: 100110111010010101100010000000100011110000000₂
• Hexadecimal: 0x1374AC404780
• Base-36: 7KZ9PHPC0

Squares and roots of 21391827027840

• 21391827027840 squared (21391827027840²) is 457610263589025928135065600
• 21391827027840 cubed (21391827027840³) is 9789119604860711491498237788131426304000
• The square root of 21391827027840 is 4625129.9471301345
• The cube root of 21391827027840 is 27759.7761309311

Scales and comparisons

• 21,391,827,027,840 seconds is equal to 680,193 years, 48 weeks, 2 days, 14 hours, 24 minutes.
• To count from 1 to 21,391,827,027,840 would take you about one million, seven hundred thousand, four hundred eighty-four 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 21391827027840 cubic inches would be around 2313.3 feet tall.

Recreational maths with 21391827027840

• 21391827027840 backwards is 04872072819312
• 21391827027840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21391827027840's digits is 54
• More coming soon!