21359994180

Names of 21359994180

• Cardinal: 21359994180 can be written as Twenty-one billion, three hundred fifty-nine million, nine hundred ninety-four thousand, one hundred eighty.

Scientific notation

• Scientific notation: 2.135999418 × 10¹⁰

Factors of 21359994180

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1137

Divisors of 21359994180

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 19 20 21 28 30 35 37 38 42 57 60 70 73 74 76 84 95 105 111 114 133 140 146 148 185 190 210 219 222 228 259 266 285 292 365 370 380 399 420 438 444 511 518 532 555 570 665 703 730 740 777 798 876 991 1022 1036 1095 1110 1140 1295 1330 1387 1406 1460 1533 1554 1596 1982 1995 2044 2109 2190 2220 2555 2590 2660 2701 2774 2812 2973 3066 3108 3515 3885 3964 3990 4161 4218 4380 4921 4955 5110 5180 5402 5548 5946 6132 6935 6937 7030 7665 7770 7980 8103 8322 8436 9709 9842 9910 10220 10545 10804 11892 13505 13870 13874 14060 14763 14865 15330 15540 16206 16644 18829 18907 19418 19684 19820 20805 20811 21090 24605 27010 27740 27748 29127 29526 29730 30660 32412 34685 36667 37658 37814 38836 40515 41610 41622 42180 48545 49210 51319 54020 56487 56721 58254 59052 59460 69370 72343 73334 73815 75316 75628 81030 83220 83244 94145 94535 97090 98420 102638 104055 110001 112974 113442 116508 131803 138740 144686 145635 146668 147630 153957 162060 183335 188290 189070 194180 205276 208110 217029 220002 225948 226884 256595 256669 263606 282435 283605 289372 291270 295260 307914 359233 361715 366670 376580 378140 395409 416220 434058 440004 506401 513190 513338 527212 550005 564870 567210 582540 615828 659015 696673 718466 723430 733340 769785 770007 790818 868116 1012802 1026380 1026676 1077699 1085145 1100010 1129740 1134420 1283345 1318030 1374517 1393346 1436932 1446860 1519203 1539570 1540014 1581636 1796165 1977045 2025604 2090019 2155398 2170290 2200020 2532005 2566690 2636060 2676691 2749034 2786692 3038406 3079140 3080028 3483365 3592330 3850035 3954090 4123551 4180038 4310796 4340580 4876711 5064010 5133380 5353382 5388495 5498068 6076812 6872585 6966730 7184660 7596015 7700070 7908180 8030073 8247102 8360076 9621619 9753422 10128020 10450095 10706764 10776990 13383455 13745170 13933460 14630133 15192030 15400140 16060146 16494204 18736837 19243238 19506844 20617755 20900190 21553980 24383555 26766910 27490340 28864857 29260266 30384060 32120292 37473674 38486476 40150365 41235510 41800380 48108095 48767110 50857129 53533820 56210511 57729714 58520532 73150665 74947348 80300730 82471020 93684185 96216190 97534220 101714258 112421022 115459428 144324285 146301330 152571387 160601460 187368370 192432380 203428516 224842044 254285645 281052555 288648570 292602660 305142774 355999903 374736740 508571290 562105110 577297140 610285548 711999806 762856935 1017142580 1067999709 1124210220 1423999612 1525713870 1779999515 2135999418 3051427740 3559999030 4271998836 5339998545 7119998060 10679997090 21359994180
• Sum of all divisors σ(n): 74981867520
• Sum of proper divisors (its aliquot sum) s(n): 53621873340
• 21359994180 is an abundant number, because the sum of its proper divisors (53621873340) is greater than itself. Its abundance is 32261879160

Bases of 21359994180

• Binary: 10011111001001001111010010101000100₂
• Hexadecimal: 0x4F927A544
• Base-36: 9T96SZO

Squares and roots of 21359994180

• 21359994180 squared (21359994180²) is 456249351369633872400
• 21359994180 cubed (21359994180³) is 9745483489884154543194862632000
• The square root of 21359994180 is 146150.5873405919
• The cube root of 21359994180 is 2774.5999663595

Scales and comparisons

• 21,359,994,180 seconds is equal to 679 years, 9 weeks, 3 days, 3 hours, 43 minutes.
• To count from 1 to 21,359,994,180 would take you about one thousand, three hundred fifty-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 21359994180 cubic inches would be around 231.2 feet tall.

Recreational maths with 21359994180

• 21359994180 backwards is 08149995312
• The number of decimal digits it has is: 11
• The sum of 21359994180's digits is 51
• More coming soon!