21379977216

Names of 21379977216

• Cardinal: 21379977216 can be written as Twenty-one billion, three hundred seventy-nine million, nine hundred seventy-seven thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.1379977216 × 10¹⁰

Factors of 21379977216

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 4975

Divisors of 21379977216

• Number of divisors d(n): 260
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 81 96 104 108 117 128 144 156 162 192 208 216 234 256 288 312 324 351 384 416 432 468 512 576 624 648 702 768 832 864 936 1024 1053 1152 1248 1296 1404 1536 1664 1728 1872 2048 2106 2304 2496 2592 2808 3072 3328 3456 3744 4096 4212 4608 4957 4992 5184 5616 6144 6656 6912 7488 8424 9216 9914 9984 10368 11232 12288 13312 13824 14871 14976 16848 18432 19828 19968 20736 22464 26624 27648 29742 29952 33696 36864 39656 39936 41472 44613 44928 53248 55296 59484 59904 64441 67392 79312 79872 82944 89226 89856 110592 118968 119808 128882 133839 134784 158624 159744 165888 178452 179712 193323 237936 239616 257764 267678 269568 317248 331776 356904 359424 386646 401517 475872 479232 515528 535356 539136 579969 634496 713808 718848 773292 803034 951744 1031056 1070712 1078272 1159938 1268992 1427616 1437696 1546584 1606068 1739907 1903488 2062112 2141424 2156544 2319876 2537984 2855232 3093168 3212136 3479814 3806976 4124224 4282848 4313088 4639752 5075968 5219721 5710464 6186336 6424272 6959628 7613952 8248448 8565696 9279504 10151936 10439442 11420928 12372672 12848544 13919256 15227904 16496896 17131392 18559008 20303872 20878884 22841856 24745344 25697088 27838512 30455808 32993792 34262784 37118016 41757768 45683712 49490688 51394176 55677024 60911616 65987584 68525568 74236032 83515536 91367424 98981376 102788352 111354048 131975168 137051136 148472064 167031072 182734848 197962752 205576704 222708096 263950336 274102272 296944128 334062144 395925504 411153408 445416192 548204544 593888256 668124288 791851008 822306816 890832384 1187776512 1336248576 1644613632 1781664768 2375553024 2672497152 3563329536 5344994304 7126659072 10689988608 21379977216
• Sum of all divisors σ(n): 68794996732
• Sum of proper divisors (its aliquot sum) s(n): 47415019516
• 21379977216 is an abundant number, because the sum of its proper divisors (47415019516) is greater than itself. Its abundance is 26035042300

Bases of 21379977216

• Binary: 10011111010010110001001000000000000₂
• Hexadecimal: 0x4FA589000
• Base-36: 9TL3400

Squares and roots of 21379977216

• 21379977216 squared (21379977216²) is 457103425756679110656
• 21379977216 cubed (21379977216³) is 9772860828033346945648422813696
• The square root of 21379977216 is 146218.9359009291
• The cube root of 21379977216 is 2775.4649424029

Scales and comparisons

• 21,379,977,216 seconds is equal to 679 years, 42 weeks, 3 days, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,379,977,216 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 21379977216 cubic inches would be around 231.3 feet tall.

Recreational maths with 21379977216

• 21379977216 backwards is 61277997312
• 21379977216 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21379977216's digits is 54
• More coming soon!