21405308723704320

Names of 21405308723704320

• Cardinal: 21405308723704320 can be written as Twenty-one quadrillion, four hundred five trillion, three hundred eight billion, seven hundred twenty-three million, seven hundred four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.140530872370432 × 10¹⁶

Factors of 21405308723704320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 232139074

Divisors of 21405308723704320

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1280 1536 1920 2560 3840 7680 12007 24014 36021 48028 60035 72042 96056 120070 144084 180105 192112 240140 288168 360210 384224 480280 576336 720420 768448 960560 1152672 1440840 1536896 1921120 2305344 2881680 3073792 3842240 4610688 5763360 6147584 7684480 9221376 11526720 15368960 18442752 23053440 30737920 46106880 92213760 232127057 464254114 696381171 928508228 1160635285 1392762342 1857016456 2321270570 2785524684 3481905855 3714032912 4642541140 5571049368 6963811710 7428065824 9285082280 11142098736 13927623420 14856131648 18570164560 22284197472 27855246840 29712263296 37140329120 44568394944 55710493680 59424526592 74280658240 89136789888 111420987360 118849053184 148561316480 178273579776 222841974720 297122632960 356547159552 445683949440 594245265920 891367898880 1782735797760 2787149573399 5574299146798 8361448720197 11148598293596 13935747866995 16722897440394 22297196587192 27871495733990 33445794880788 41807243600985 44594393174384 55742991467980 66891589761576 83614487201970 89188786348768 111485982935960 133783179523152 167228974403940 178377572697536 222971965871920 267566359046304 334457948807880 356755145395072 445943931743840 535132718092608 668915897615760 713510290790144 891887863487680 1070265436185216 1337831795231520 1427020581580288 1783775726975360 2140530872370432 2675663590463040 3567551453950720 4281061744740864 5351327180926080 7135102907901440 10702654361852160 21405308723704320
• Sum of all divisors σ(n): 68435795804416128
• Sum of proper divisors (its aliquot sum) s(n): 47030487080711808
• 21405308723704320 is an abundant number, because the sum of its proper divisors (47030487080711808) is greater than itself. Its abundance is 25625178357007488

Bases of 21405308723704320

• Binary: 1001100000011000000001111001110110010001011001000000000₂
• Hexadecimal: 0x4C0C03CEC8B200
• Base-36: 5URJR2PEEIO

Squares and roots of 21405308723704320

• 21405308723704320 squared (21405308723704320²) is 458187241557092264809062786662400
• 21405308723704320 cubed (21405308723704320³) is 9807639358792045596406748820749677878017261568000
• The square root of 21405308723704320 is 146305532.1021878517
• The cube root of 21405308723704320 is 277656.0655494575

Scales and comparisons

• 21,405,308,723,704,320 seconds is equal to 680,622,606 years, 23 weeks, 1 day, 13 hours, 52 minutes.
• To count from 1 to 21,405,308,723,704,320 would take you about two billion, forty-one million, eight hundred sixty-seven thousand, eight hundred nineteen 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 21405308723704320 cubic inches would be around 23138 feet tall.

Recreational maths with 21405308723704320

• 21405308723704320 backwards is 02340732780350412
• The number of decimal digits it has is: 17
• The sum of 21405308723704320's digits is 51
• More coming soon!