21139287120

Names of 21139287120

• Cardinal: 21139287120 can be written as Twenty-one billion, one hundred thirty-nine million, two hundred eighty-seven thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.113928712 × 10¹⁰

Factors of 21139287120

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 812

Divisors of 21139287120

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 23 24 27 28 30 35 36 40 42 45 46 48 54 56 60 63 69 70 72 80 84 89 90 92 105 108 112 115 120 126 135 138 140 144 161 168 178 180 184 189 207 210 216 230 240 252 267 270 276 280 315 322 336 345 356 360 368 378 414 420 432 445 460 483 504 534 540 552 560 621 623 630 644 683 690 712 720 756 801 805 828 840 890 920 945 966 1008 1035 1068 1080 1104 1242 1246 1260 1288 1335 1366 1380 1424 1449 1512 1602 1610 1656 1680 1780 1840 1869 1890 1932 2047 2049 2070 2136 2160 2403 2415 2484 2492 2520 2576 2670 2732 2760 2898 3024 3105 3115 3204 3220 3312 3415 3560 3738 3780 3864 4005 4094 4098 4140 4272 4347 4781 4806 4830 4968 4984 5040 5340 5464 5520 5607 5796 6141 6147 6210 6230 6408 6440 6830 7120 7245 7476 7560 7728 8010 8188 8196 8280 8694 9345 9562 9612 9660 9936 9968 10235 10245 10680 10928 11214 11592 12015 12282 12294 12420 12460 12816 12880 13660 14329 14343 14490 14952 15120 15709 16020 16376 16392 16560 16821 17388 18423 18441 18690 19124 19224 19320 20470 20490 21360 21735 22428 23184 23905 24030 24564 24588 24840 24920 27320 28035 28658 28686 28980 29904 30705 30735 31418 32040 32752 32784 33642 34776 36846 36882 37380 38248 38448 38640 40940 40980 42987 43029 43470 44856 47127 47810 48060 49128 49176 49680 49840 54640 55269 56070 57316 57372 57960 60787 61410 61470 62836 64080 67284 69552 71645 71715 73692 73764 74760 76496 78545 81880 81960 84105 85974 86058 86940 89712 92115 92205 94254 95620 96120 98256 98352 109963 110538 112140 114632 114744 115920 121574 122820 122940 125672 128961 129087 134568 141381 143290 143430 147384 147528 149520 157090 163760 163920 168210 171948 172116 173880 182361 184230 184410 188508 191240 192240 214935 215145 219926 221076 224280 229264 229488 235635 243148 245640 245880 251344 257922 258174 269136 276345 282762 286580 286860 294768 295056 303935 314180 329889 336420 343896 344232 347760 364722 368460 368820 377016 382480 386883 424143 425509 429870 430290 439852 442152 448560 471270 486296 491280 491760 515844 516348 547083 549815 552690 565524 573160 573720 607870 628360 644805 645435 659778 672840 687792 688464 706905 729444 736920 737640 754032 773766 848286 851018 859740 860580 879704 884304 911805 942540 972592 989667 1031688 1032696 1094166 1099630 1105380 1131048 1146320 1147440 1215740 1256720 1276527 1289610 1290870 1319556 1345680 1398101 1413810 1458888 1473840 1475280 1547532 1641249 1649445 1696572 1702036 1719480 1721160 1759408 1823610 1885080 1934415 1979334 2063376 2065392 2120715 2127545 2188332 2199260 2210760 2262096 2431480 2553054 2579220 2581740 2639112 2735415 2796202 2827620 2917776 2969001 3095064 3282498 3298890 3393144 3404072 3438960 3442320 3647220 3770160 3829581 3868830 3958668 4194303 4241430 4255090 4376664 4398520 4421520 4862960 4948335 5106108 5158440 5163480 5278224 5470830 5592404 5655240 5938002 6190128 6382635 6564996 6597780 6786288 6808144 6990505 7294440 7659162 7737660 7917336 8206245 8388606 8482860 8510180 8753328 8797040 9786707 9896670 10212216 10316880 10326960 10941660 11184808 11310480 11488743 11876004 12582909 12765270 13129992 13195560 13981010 14588880 14845005 15318324 15475320 15834672 16412490 16777212 16965720 17020360 19147905 19573414 19793340 20424432 20971515 21883320 22369616 22977486 23752008 25165818 25530540 26259984 26391120 27962020 29360121 29690010 30636648 30950640 32824980 33554424 33931440 34040720 37748727 38295810 39146828 39586680 41943030 43766640 45954972 47504016 48933535 50331636 51061080 55924040 57443715 58720242 59380020 61273296 62914545 65649960 67108848 75497454 76591620 78293656 79173360 83886060 88080363 91909944 97867070 100663272 102122160 111848080 114887430 117440484 118760040 125829090 131299920 146800605 150994908 153183240 156587312 167772120 176160726 183819888 188743635 195734140 201326544 229774860 234880968 237520080 251658180 264241089 293601210 301989816 306366480 335544240 352321452 377487270 391468280 440401815 459549720 469761936 503316360 528482178 587202420 603979632 704642904 754974540 782936560 880803630 919099440 1006632720 1056964356 1174404840 1321205445 1409285808 1509949080 1761607260 2113928712 2348809680 2642410890 3019898160 3523214520 4227857424 5284821780 7046429040 10569643560 21139287120
• Sum of all divisors σ(n): 87937228800
• Sum of proper divisors (its aliquot sum) s(n): 66797941680
• 21139287120 is an abundant number, because the sum of its proper divisors (66797941680) is greater than itself. Its abundance is 45658654560

Bases of 21139287120

• Binary: 10011101011111111111110110001010000₂
• Hexadecimal: 0x4EBFFEC50
• Base-36: 9PLSAC0

Squares and roots of 21139287120

• 21139287120 squared (21139287120²) is 446869459941797894400
• 21139287120 cubed (21139287120³) is 9446501818869004178733040128000
• The square root of 21139287120 is 145393.5594171901
• The cube root of 21139287120 is 2765.0104637903

Scales and comparisons

• 21,139,287,120 seconds is equal to 672 years, 8 weeks, 3 days, 16 hours, 12 minutes.
• To count from 1 to 21,139,287,120 would take you about one thousand, three hundred forty-four 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 21139287120 cubic inches would be around 230.4 feet tall.

Recreational maths with 21139287120

• 21139287120 backwards is 02178293112
• 21139287120 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21139287120's digits is 36
• More coming soon!