21378077320

Names of 21378077320

• Cardinal: 21378077320 can be written as Twenty-one billion, three hundred seventy-eight million, seventy-seven thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.137807732 × 10¹⁰

Factors of 21378077320

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 424

Divisors of 21378077320

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 17 20 29 34 40 41 58 68 82 85 116 136 137 145 164 170 193 205 232 274 290 328 340 386 410 493 548 580 680 685 697 772 820 965 986 1096 1160 1189 1370 1394 1544 1640 1930 1972 2329 2378 2465 2740 2788 3281 3485 3860 3944 3973 4658 4756 4930 5480 5576 5597 5617 5945 6562 6970 7720 7913 7946 9316 9512 9860 11194 11234 11645 11890 13124 13940 15826 15892 16405 18632 19720 19865 20213 22388 22468 23290 23780 26248 26441 27880 27985 28085 31652 31784 32810 39565 39730 40426 44776 44936 46580 47560 52882 55970 56170 63304 65620 67541 79130 79460 80852 93160 95149 95489 101065 105764 111940 112340 131240 132205 134521 135082 158260 158920 161704 162893 190298 190978 202130 211528 223880 224680 229477 264410 269042 270164 316520 325786 337705 380596 381956 404260 449497 458954 475745 477445 528820 538084 540328 651572 672605 675410 761192 763912 766789 808520 814465 898994 917908 951490 954890 1057640 1076168 1084081 1147385 1303144 1345210 1350820 1533578 1628930 1797988 1835816 1902980 1909780 2168162 2247485 2294770 2690420 2701640 2769181 3067156 3257860 3595976 3805960 3819560 3833945 3901109 4336324 4494970 4589540 5380840 5420405 5538362 6134312 6515720 7667890 7802218 8672648 8989940 9179080 10840810 11076724 13035413 13845905 15335780 15604436 17979880 18429377 19505545 21681620 22153448 26070826 27691810 30671560 31208872 31438349 36858754 39011090 43363240 52141652 55383620 62876698 65177065 73717508 78022180 92146885 104283304 110767240 125753396 130354130 147435016 156044360 157191745 184293770 251506792 260708260 314383490 368587540 521416520 534451933 628766980 737175080 1068903866 1257533960 2137807732 2672259665 4275615464 5344519330 10689038660 21378077320
• Sum of all divisors σ(n): 54647006400
• Sum of proper divisors (its aliquot sum) s(n): 33268929080
• 21378077320 is an abundant number, because the sum of its proper divisors (33268929080) is greater than itself. Its abundance is 11890851760

Bases of 21378077320

• Binary: 10011111010001110111001001010001000₂
• Hexadecimal: 0x4FA3B9288
• Base-36: 9TJYE14

Squares and roots of 21378077320

• 21378077320 squared (21378077320²) is 457022189899898382400
• 21378077320 cubed (21378077320³) is 9770255712635750679090127168000
• The square root of 21378077320 is 146212.4390057153
• The cube root of 21378077320 is 2775.3827276139

Scales and comparisons

• 21,378,077,320 seconds is equal to 679 years, 39 weeks, 2 days, 10 hours, 48 minutes, 40 seconds.
• To count from 1 to 21,378,077,320 would take you about one thousand, three hundred fifty-nine 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 21378077320 cubic inches would be around 231.3 feet tall.

Recreational maths with 21378077320

• 21378077320 backwards is 02377087312
• 21378077320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21378077320's digits is 40
• More coming soon!