20491911440

Names of 20491911440

• Cardinal: 20491911440 can be written as Twenty billion, four hundred ninety-one million, nine hundred eleven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.049191144 × 10¹⁰

Factors of 20491911440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 622

Divisors of 20491911440

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 5 7 8 10 11 13 14 16 20 22 26 28 35 40 43 44 52 55 56 65 70 77 80 86 88 91 104 110 112 121 130 140 143 154 172 176 182 208 215 220 242 260 280 286 301 308 344 364 385 430 440 455 473 484 520 541 559 560 572 602 605 616 688 715 728 770 847 860 880 910 946 968 1001 1040 1082 1118 1144 1204 1210 1232 1430 1456 1505 1540 1573 1694 1720 1820 1892 1936 2002 2164 2236 2288 2365 2408 2420 2705 2795 2860 3010 3080 3146 3311 3388 3440 3640 3784 3787 3913 4004 4235 4328 4472 4730 4816 4840 5005 5203 5410 5590 5720 5951 6020 6149 6160 6292 6622 6776 7033 7280 7568 7574 7826 7865 8008 8470 8656 8944 9460 9680 10010 10406 10820 11011 11180 11440 11902 12040 12298 12584 13244 13552 14066 15148 15652 15730 16016 16555 16940 18920 18935 19565 20020 20812 21640 22022 22360 23263 23804 24080 24596 25168 26015 26488 28132 29755 30296 30745 31304 31460 33110 33880 35165 36421 37840 37870 39130 40040 41624 41657 43043 43280 44044 44720 46526 47608 49192 49231 52030 52976 55055 56264 59510 60592 61490 62608 62920 65461 66220 67639 67760 70330 72842 75740 77363 78260 80080 83248 83314 86086 88088 93052 95216 98384 98462 104060 110110 112528 116315 119020 122980 125840 130922 132440 135278 140660 145684 151480 154726 156520 162841 166628 172172 176176 182105 186104 196924 208120 208285 215215 220220 232630 238040 245960 246155 255893 261844 264880 270556 281320 291368 302419 302960 309452 313040 325682 327305 333256 338195 344344 364210 372208 386815 393848 416240 416570 430430 440440 458227 465260 473473 476080 491920 492310 511786 523688 541112 541541 562640 582736 604838 618904 651364 654610 666512 676390 688688 728420 773630 787696 814205 833140 850993 860860 880880 916454 930520 946946 984620 1023572 1047376 1082224 1083082 1209676 1237808 1279465 1302728 1309220 1352780 1456840 1512095 1547260 1628410 1666280 1701986 1721720 1791251 1832908 1861040 1893892 1969240 2047144 2116933 2166164 2291135 2367365 2419352 2558930 2605456 2618440 2705560 2707705 2814823 2913680 3024190 3094520 3256820 3326609 3332560 3403972 3443440 3582502 3665816 3787784 3938480 4094288 4233866 4254965 4332328 4582270 4734730 4838704 5117860 5236880 5411120 5415410 5629646 5956951 6048380 6189040 6513640 6653218 6807944 7165004 7331632 7575568 8467732 8509930 8664656 8956255 9164540 9469460 10235720 10584665 10830820 11259292 11913902 12096760 13027280 13306436 13615888 14074115 14330008 16633045 16935464 17019860 17912510 18329080 18938920 19703761 20471440 21169330 21661640 22518584 23286263 23827804 24193520 26612872 28148230 28660016 29784755 33266090 33870928 34039720 35825020 36592699 36658160 37877840 39407522 42338660 43323280 45037168 46572526 47655608 53225744 56296460 59569510 66532180 68079440 71650040 73185398 78815044 84677320 93145052 95311216 98518805 112592920 116431315 119139020 133064360 143300080 146370796 157630088 169354640 182963495 186290104 197037610 225185840 232862630 238278040 256148893 266128720 292741592 315260176 365926990 372580208 394075220 465725260 476556080 512297786 585483184 731853980 788150440 931450520 1024595572 1280744465 1463707960 1576300880 1862901040 2049191144 2561488930 2927415920 4098382288 5122977860 10245955720 20491911440
• Sum of all divisors σ(n): 66074604288
• Sum of proper divisors (its aliquot sum) s(n): 45582692848
• 20491911440 is an abundant number, because the sum of its proper divisors (45582692848) is greater than itself. Its abundance is 25090781408

Bases of 20491911440

• Binary: 10011000101011010011100000100010000₂
• Hexadecimal: 0x4C569C110
• Base-36: 9EWCS28

Squares and roots of 20491911440

• 20491911440 squared (20491911440²) is 419918434464802873600
• 20491911440 cubed (20491911440³) is 8604931371076184282868713984000
• The square root of 20491911440 is 143149.9613691879
• The cube root of 20491911440 is 2736.4918357333

Scales and comparisons

• 20,491,911,440 seconds is equal to 651 years, 30 weeks, 21 hours, 37 minutes, 20 seconds.
• To count from 1 to 20,491,911,440 would take you about one thousand, three hundred three 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 20491911440 cubic inches would be around 228 feet tall.

Recreational maths with 20491911440

• 20491911440 backwards is 04411919402
• 20491911440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20491911440's digits is 35
• More coming soon!