20438439840

Names of 20438439840

• Cardinal: 20438439840 can be written as Twenty billion, four hundred thirty-eight million, four hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.043843984 × 10¹⁰

Factors of 20438439840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 8258

Divisors of 20438439840

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 19 20 21 24 26 28 30 32 35 36 38 39 40 42 45 48 52 56 57 60 63 65 70 72 76 78 80 84 90 91 95 96 104 105 112 114 117 120 126 130 133 140 144 152 156 160 168 171 180 182 190 195 208 210 224 228 234 240 247 252 260 266 273 280 285 288 304 312 315 336 342 360 364 380 390 399 416 420 455 456 468 480 494 504 520 532 546 560 570 585 608 624 630 665 672 684 720 728 741 760 780 798 819 840 855 910 912 936 988 1008 1040 1064 1092 1120 1140 1170 1197 1235 1248 1260 1330 1365 1368 1440 1456 1482 1520 1560 1596 1638 1680 1710 1729 1820 1824 1872 1976 1995 2016 2080 2128 2184 2223 2280 2340 2394 2470 2520 2660 2730 2736 2912 2964 3040 3120 3192 3276 3360 3420 3458 3640 3705 3744 3952 3990 4095 4256 4368 4446 4560 4680 4788 4940 5040 5187 5320 5460 5472 5928 5985 6240 6384 6552 6840 6916 7280 7410 7904 7980 8190 8209 8645 8736 8892 9120 9360 9576 9880 10080 10374 10640 10920 11115 11856 11970 12768 13104 13680 13832 14560 14820 15561 15960 16380 16418 17290 17784 18720 19152 19760 20748 21280 21840 22230 23712 23940 24627 25935 26208 27360 27664 29640 31122 31920 32760 32836 34580 35568 38304 39520 41045 41496 43680 44460 47880 49254 51870 55328 57463 59280 62244 63840 65520 65672 69160 71136 73881 77805 82090 82992 88920 95760 98508 103740 106717 114926 118560 123135 124488 131040 131344 138320 147762 155610 155971 164180 165984 172389 177840 191520 197016 207480 213434 229852 246270 248976 262688 276640 287315 295524 311220 311942 320151 328360 344778 355680 369405 394032 414960 426868 459704 467913 492540 497952 517167 533585 574630 591048 622440 623884 640302 656720 689556 738810 747019 779855 788064 829920 853736 861945 919408 935826 960453 985080 1034334 1067170 1091797 1149260 1182096 1244880 1247768 1280604 1313440 1379112 1403739 1477620 1494038 1559710 1600755 1707472 1723890 1838816 1871652 1920906 1970160 2027623 2068668 2134340 2183594 2241057 2298520 2339565 2364192 2489760 2495536 2561208 2585835 2758224 2807478 2955240 2988076 3119420 3201510 3275391 3414944 3447780 3735095 3743304 3841812 3940320 4055246 4137336 4268680 4367188 4482114 4597040 4679130 4802265 4991072 5122416 5171670 5458985 5516448 5614956 5910480 5976152 6082869 6238840 6403020 6550782 6723171 6895560 7018695 7470190 7486608 7683624 8110492 8274672 8537360 8734376 8964228 9194080 9358260 9604530 9826173 10138115 10244832 10343340 10917970 11205285 11229912 11820960 11952304 12165738 12477680 12806040 13101564 13446342 13791120 14037390 14193361 14940380 14973216 15367248 16220984 16376955 16549344 17074720 17468752 17928456 18248607 18716520 19209060 19652346 20276230 20686680 21835940 22410570 22459824 23904608 24331476 24955360 25612080 26203128 26892684 27582240 28074780 28386722 29880760 30414345 30734496 32441968 32753910 33615855 34937504 35856912 36497214 37433040 38418120 39304692 40552460 41373360 42580083 43671880 44821140 44919648 48662952 49130865 51224160 52406256 53785368 56149560 56773444 59761520 60828690 64883936 65507820 67231710 70966805 71713824 72994428 74866080 76836240 78609384 81104920 82746720 85160166 87343760 89642280 91243035 97325904 98261730 104812512 107570736 112299120 113546888 119523040 121657380 127740249 131015640 134463420 141933610 145988856 153672480 157218768 162209840 170320332 174687520 179284560 182486070 194651808 196523460 212900415 215141472 224598240 227093776 243314760 255480498 262031280 268926840 283867220 291977712 314437536 324419680 340640664 358569120 364972140 393046920 425800830 454187552 486629520 510960996 524062560 537853680 567734440 583955424 638701245 681281328 729944280 786093840 851601660 973259040 1021921992 1075707360 1135468880 1277402490 1362562656 1459888560 1572187680 1703203320 2043843984 2270937760 2554804980 2919777120 3406406640 4087687968 5109609960 6812813280 10219219920 20438439840
• Sum of all divisors σ(n): 90370425600
• Sum of proper divisors (its aliquot sum) s(n): 69931985760
• 20438439840 is an abundant number, because the sum of its proper divisors (69931985760) is greater than itself. Its abundance is 49493545920

Bases of 20438439840

• Binary: 10011000010001110011101011110100000₂
• Hexadecimal: 0x4C239D7A0
• Base-36: 9E0IP40

Squares and roots of 20438439840

• 20438439840 squared (20438439840²) is 417729823093299225600
• 20438439840 cubed (20438439840³) is 8537745858666238929544187904000
• The square root of 20438439840 is 142963.0715954299
• The cube root of 20438439840 is 2734.1095615493

Scales and comparisons

• 20,438,439,840 seconds is equal to 649 years, 45 weeks, 5 days, 24 minutes.
• To count from 1 to 20,438,439,840 would take you about one thousand, two hundred ninety-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 20438439840 cubic inches would be around 227.8 feet tall.

Recreational maths with 20438439840

• 20438439840 backwards is 04893483402
• 20438439840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20438439840's digits is 45
• More coming soon!