20487691840

Names of 20487691840

• Cardinal: 20487691840 can be written as Twenty billion, four hundred eighty-seven million, six hundred ninety-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.048769184 × 10¹⁰

Factors of 20487691840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 335

Divisors of 20487691840

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 49 55 56 64 70 71 77 80 88 98 110 112 140 142 154 160 176 196 220 224 239 245 280 284 308 320 343 352 355 385 392 440 448 478 490 497 539 560 568 616 686 704 710 770 781 784 880 956 980 994 1078 1120 1136 1195 1232 1372 1420 1540 1562 1568 1673 1715 1760 1912 1960 1988 2156 2240 2272 2390 2464 2485 2629 2695 2744 2840 3080 3124 3136 3346 3430 3479 3520 3773 3824 3905 3920 3976 4312 4544 4780 4928 4970 5258 5390 5467 5488 5680 6160 6248 6692 6860 6958 7546 7648 7810 7840 7952 8365 8624 9560 9940 10516 10780 10934 10976 11360 11711 12320 12496 13145 13384 13720 13916 15092 15296 15620 15680 15904 16730 16969 17248 17395 18403 18865 19120 19880 21032 21560 21868 21952 22720 23422 24353 24640 24992 26290 26768 27335 27440 27832 30184 31240 31808 33460 33938 34496 34790 36806 37730 38240 38269 39760 42064 43120 43736 46844 48706 49984 52580 53536 54670 54880 55664 58555 60368 62480 66920 67876 69580 73612 75460 76480 76538 79520 81977 84128 84845 86240 87472 92015 93688 97412 105160 107072 109340 109760 111328 117110 118783 120736 121765 124960 128821 133840 135752 139160 147224 150920 153076 159040 163954 168256 169690 172480 174944 184030 186659 187376 191345 194824 210320 218680 222656 234220 237566 241472 243530 249920 257642 267680 267883 271504 278320 294448 301840 306152 327908 339380 349888 368060 373318 374752 382690 389648 409885 420640 437360 468440 475132 487060 515284 535360 535766 543008 556640 588896 593915 603680 612304 644105 655816 678760 736120 746636 749504 765380 779296 819770 831481 841280 874720 901747 933295 936880 950264 974120 1030568 1071532 1086016 1113280 1177792 1187830 1207360 1224608 1288210 1306613 1311632 1339415 1357520 1472240 1493272 1530760 1558592 1639540 1662962 1749440 1803494 1866590 1873760 1900528 1948240 2061136 2143064 2375660 2449216 2576420 2613226 2623264 2678830 2715040 2944480 2986544 3061520 3279080 3325924 3606988 3733180 3747520 3801056 3896480 4122272 4157405 4286128 4508735 4751320 5152840 5226452 5246528 5357660 5430080 5820367 5888960 5973088 6123040 6533065 6558160 6651848 7213976 7466360 7602112 7792960 8244544 8314810 8572256 9017470 9146291 9502640 10305680 10452904 10715320 11640734 11946176 12246080 13066130 13116320 13303696 14427952 14932720 16629620 17144512 18034940 18292582 19005280 20611360 20905808 21430640 23281468 26132260 26232640 26607392 28855904 29101835 29865440 33259240 36069880 36585164 38010560 41222720 41811616 42861280 45731455 46562936 52264520 53214784 57711808 58203670 59730880 64024037 66518480 72139760 73170328 83623232 85722560 91462910 93125872 104529040 116407340 128048074 133036960 144279520 146340656 182925820 186251744 209058080 232814680 256096148 266073920 288559040 292681312 320120185 365851640 372503488 418116160 465629360 512192296 585362624 640240370 731703280 931258720 1024384592 1280480740 1463406560 1862517440 2048769184 2560961480 2926813120 4097538368 5121922960 10243845920 20487691840
• Sum of all divisors σ(n): 63203328000
• Sum of proper divisors (its aliquot sum) s(n): 42715636160
• 20487691840 is an abundant number, because the sum of its proper divisors (42715636160) is greater than itself. Its abundance is 22227944320

Bases of 20487691840

• Binary: 10011000101001010010101111001000000₂
• Hexadecimal: 0x4C5295E40
• Base-36: 9ETUC74

Squares and roots of 20487691840

• 20487691840 squared (20487691840²) is 419745516930802585600
• 20487691840 cubed (20487691840³) is 8599616802099785977648021504000
• The square root of 20487691840 is 143135.2222201091
• The cube root of 20487691840 is 2736.3039942421

Scales and comparisons

• 20,487,691,840 seconds is equal to 651 years, 23 weeks, 1 day, 1 hour, 30 minutes, 40 seconds.
• To count from 1 to 20,487,691,840 would take you about one thousand, three hundred two 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 20487691840 cubic inches would be around 228 feet tall.

Recreational maths with 20487691840

• 20487691840 backwards is 04819678402
• 20487691840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20487691840's digits is 49
• More coming soon!