20420978688

Names of 20420978688

• Cardinal: 20420978688 can be written as Twenty billion, four hundred twenty million, nine hundred seventy-eight thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 2.0420978688 × 10¹⁰

Factors of 20420978688

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 66

Divisors of 20420978688

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 19 22 24 27 31 32 33 36 38 44 48 54 57 62 64 66 72 76 81 88 93 96 99 108 114 124 128 132 144 152 162 171 176 186 192 198 209 216 228 248 256 264 279 288 297 304 324 341 342 352 361 372 384 396 418 432 456 496 512 513 528 558 576 589 594 608 627 648 682 684 704 722 744 768 792 836 837 864 891 912 992 1023 1024 1026 1056 1083 1116 1152 1178 1188 1216 1254 1296 1364 1368 1408 1444 1488 1536 1539 1584 1672 1674 1728 1767 1782 1824 1881 1984 2046 2048 2052 2112 2166 2232 2304 2356 2376 2432 2508 2511 2592 2728 2736 2816 2888 2976 3069 3072 3078 3168 3249 3344 3348 3456 3534 3564 3648 3762 3968 3971 4092 4104 4224 4332 4464 4608 4712 4752 4864 5016 5022 5184 5301 5456 5472 5632 5643 5776 5952 6138 6144 6156 6336 6479 6498 6688 6696 6912 7068 7128 7296 7524 7936 7942 8184 8208 8448 8664 8928 9207 9216 9424 9504 9728 9747 10032 10044 10368 10602 10912 10944 11191 11264 11286 11552 11904 11913 12276 12312 12672 12958 12996 13376 13392 13824 14136 14256 14592 15048 15872 15884 15903 16368 16416 16896 16929 17328 17856 18414 18432 18848 19008 19437 19456 19494 20064 20088 20736 21204 21824 21888 22382 22528 22572 23104 23808 23826 24552 24624 25344 25916 25992 26752 26784 27621 27648 28272 28512 29184 29241 30096 31744 31768 31806 32736 32832 33573 33792 33858 34656 35712 35739 36828 37696 38016 38874 38912 38988 40128 40176 41472 42408 43648 43776 44764 45144 46208 47616 47652 47709 49104 49248 50688 51832 51984 53504 53568 55242 55296 56544 57024 58311 58368 58482 60192 63488 63536 63612 65472 65664 67146 67584 67716 69312 71424 71478 73656 75392 76032 77748 77976 80256 80352 82944 84816 87296 87552 89528 90288 92416 95232 95304 95418 98208 98496 100719 101376 103664 103968 107008 107136 107217 110484 113088 114048 116622 116736 116964 120384 123101 127072 127224 130944 131328 134292 135432 138624 142848 142956 147312 150784 152064 155496 155952 160512 160704 165888 169632 174592 174933 175104 179056 180576 184832 190464 190608 190836 196416 196992 201438 202752 207328 207936 214016 214272 214434 220968 226176 228096 233244 233928 240768 246202 254144 254448 261888 262656 268584 270864 277248 285696 285912 294624 301568 302157 304128 310992 311904 321024 321408 321651 339264 349184 349866 350208 358112 361152 369303 369664 381216 381672 392832 393984 402876 414656 415872 428032 428544 428868 441936 452352 456192 466488 467856 481536 492404 508288 508896 523776 524799 525312 537168 541728 554496 571392 571824 589248 603136 604314 608256 621984 623808 642048 642816 643302 678528 698368 699732 716224 722304 738606 739328 762432 763344 785664 787968 805752 829312 831744 857088 857736 883872 904704 906471 912384 932976 935712 963072 984808 1016576 1017792 1047552 1049598 1050624 1074336 1083456 1107909 1108992 1143648 1178496 1206272 1208628 1243968 1247616 1284096 1285632 1286604 1357056 1399464 1432448 1444608 1477212 1524864 1526688 1571328 1575936 1611504 1658624 1663488 1714176 1715472 1767744 1809408 1812942 1824768 1865952 1871424 1926144 1969616 2033152 2035584 2095104 2099196 2148672 2166912 2215818 2217984 2287296 2356992 2417256 2487936 2495232 2571264 2573208 2714112 2798928 2864896 2889216 2954424 3049728 3053376 3142656 3151872 3223008 3317248 3323727 3326976 3430944 3535488 3618816 3625884 3731904 3742848 3852288 3939232 4066304 4071168 4198392 4297344 4333824 4431636 4574592 4713984 4834512 4975872 4990464 5142528 5146416 5428224 5597856 5729792 5778432 5908848 6099456 6106752 6285312 6446016 6634496 6647454 6653952 6861888 7070976 7251768 7463808 7485696 7878464 8132608 8142336 8396784 8594688 8667648 8863272 9149184 9427968 9669024 9951744 9971181 9980928 10292832 10856448 11195712 11459584 11556864 11817696 12198912 12213504 12892032 13268992 13294908 13723776 14141952 14503536 14927616 14971392 15756928 16284672 16793568 17189376 17335296 17726544 18298368 18855936 19338048 19903488 19942362 19961856 20585664 22391424 22919168 23635392 24397824 24427008 25784064 26589816 27447552 28283904 29007072 29855232 29942784 31513856 32569344 33587136 34378752 34670592 35453088 36596736 38676096 39806976 39884724 41171328 44782848 47270784 48854016 51568128 53179632 54895104 56567808 58014144 59710464 59885568 63027712 67174272 68757504 70906176 73193472 77352192 79769448 82342656 89565696 94541568 97708032 103136256 106359264 109790208 116028288 119420928 126055424 134348544 141812352 154704384 159538896 164685312 179131392 189083136 206272512 212718528 219580416 232056576 252110848 268697088 283624704 309408768 319077792 329370624 358262784 378166272 425437056 464113152 537394176 567249408 618817536 638155584 658741248 756332544 850874112 928226304 1074788352 1134498816 1276311168 1701748224 1856452608 2268997632 2552622336 3403496448 5105244672 6806992896 10210489344 20420978688
• Sum of all divisors σ(n): 72492900480
• Sum of proper divisors (its aliquot sum) s(n): 52071921792
• 20420978688 is an abundant number, because the sum of its proper divisors (52071921792) is greater than itself. Its abundance is 31650943104

Bases of 20420978688

• Binary: 10011000001001011110110100000000000₂
• Hexadecimal: 0x4C12F6800
• Base-36: 9DQ4G00

Squares and roots of 20420978688

• 20420978688 squared (20420978688²) is 417016370575750201344
• 20420978688 cubed (20420978688³) is 8515882416074505151257532956672
• The square root of 20420978688 is 142901.9897972033
• The cube root of 20420978688 is 2733.3307300127

Scales and comparisons

• 20,420,978,688 seconds is equal to 649 years, 16 weeks, 5 days, 22 hours, 4 minutes, 48 seconds.
• To count from 1 to 20,420,978,688 would take you about one thousand, two hundred ninety-eight 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 20420978688 cubic inches would be around 227.8 feet tall.

Recreational maths with 20420978688

• 20420978688 backwards is 88687902402
• 20420978688 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20420978688's digits is 54
• More coming soon!