21220681664

Names of 21220681664

• Cardinal: 21220681664 can be written as Twenty-one billion, two hundred twenty million, six hundred eighty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1220681664 × 10¹⁰

Factors of 21220681664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 563

Divisors of 21220681664

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 7 8 13 14 16 17 26 28 32 34 49 52 56 64 67 68 91 98 104 112 119 134 136 182 196 208 221 224 238 268 272 364 392 416 442 448 457 469 476 536 544 637 728 784 832 833 871 884 914 938 952 1072 1088 1139 1274 1456 1547 1568 1666 1742 1768 1828 1876 1904 2144 2278 2548 2912 3094 3136 3199 3283 3332 3484 3536 3656 3752 3808 4288 4556 5096 5824 5941 6097 6188 6398 6566 6664 6968 7072 7312 7504 7616 7769 7973 9112 10192 10829 11882 12194 12376 12796 13132 13328 13936 14144 14624 14807 15008 15538 15946 18224 20384 21658 22393 23764 24388 24752 25592 26264 26656 27872 29248 29614 30016 30619 31076 31892 36448 40768 41587 42679 43316 44786 47528 48776 49504 51184 52528 53312 54383 55744 55811 59228 61238 62152 63784 72896 83174 85358 86632 89572 95056 97552 99008 100997 102368 103649 105056 108766 111622 118456 122476 124304 127568 166348 170716 173264 179144 190112 195104 201994 204736 207298 210112 214333 217532 223244 236912 244952 248608 255136 291109 332696 341432 346528 358288 380224 380681 390208 398047 403988 414596 428666 435064 446488 473824 489904 497216 510272 520523 582218 665392 682864 693056 706979 716576 725543 761362 796094 807976 829192 857332 870128 892976 947648 979808 1041046 1164436 1330784 1365728 1413958 1433152 1451086 1500331 1522724 1592188 1615952 1658384 1714664 1740256 1785952 1959616 2082092 2328872 2661568 2731456 2786329 2827916 2902172 3000662 3045448 3184376 3231904 3316768 3429328 3480512 3571904 3643661 4164184 4657744 4948853 5572658 5655832 5804344 6001324 6090896 6368752 6463808 6633536 6766799 6858656 7287322 8328368 9315488 9897706 11145316 11311664 11608688 12002648 12181792 12737504 13533598 13717312 14574644 16656736 18630976 19504303 19795412 22290632 22623328 23217376 24005296 24363584 25475008 25505627 27067196 29149288 33313472 39008606 39590824 44581264 45246656 46434752 47367593 48010592 51011254 54134392 58298576 78017212 79181648 89162528 94735186 96021184 102022508 108268784 116597152 156034424 158363296 178325056 189470372 204045016 216537568 233194304 312068848 316726592 331573151 378940744 408090032 433075136 624137696 663146302 757881488 816180064 1248275392 1326292604 1515762976 1632360128 2652585208 3031525952 5305170416 10610340832 21220681664
• Sum of all divisors σ(n): 56813756832
• Sum of proper divisors (its aliquot sum) s(n): 35593075168
• 21220681664 is an abundant number, because the sum of its proper divisors (35593075168) is greater than itself. Its abundance is 14372393504

Bases of 21220681664

• Binary: 10011110000110110011110011111000000₂
• Hexadecimal: 0x4F0D9E7C0
• Base-36: 9QY8URK

Squares and roots of 21220681664

• 21220681664 squared (21220681664²) is 450317330284825808896
• 21220681664 cubed (21220681664³) is 9556040713756634940273315282944
• The square root of 21220681664 is 145673.2015986469
• The cube root of 21220681664 is 2768.5547102387

Scales and comparisons

• 21,220,681,664 seconds is equal to 674 years, 39 weeks, 17 hours, 47 minutes, 44 seconds.
• To count from 1 to 21,220,681,664 would take you about one thousand, three hundred forty-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 21220681664 cubic inches would be around 230.7 feet tall.

Recreational maths with 21220681664

• 21220681664 backwards is 46618602212
• The number of decimal digits it has is: 11
• The sum of 21220681664's digits is 38
• More coming soon!