21138998400

Names of 21138998400

• Cardinal: 21138998400 can be written as Twenty-one billion, one hundred thirty-eight million, nine hundred ninety-eight thousand, four hundred.

Scientific notation

• Scientific notation: 2.11389984 × 10¹⁰

Factors of 21138998400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 585

Divisors of 21138998400

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 30 32 36 39 40 45 48 50 52 60 64 65 72 75 78 80 90 96 100 104 117 120 128 130 131 144 150 156 160 180 192 195 200 208 225 234 240 260 262 288 300 312 320 325 360 384 390 393 400 416 431 450 468 480 520 524 576 585 600 624 640 650 655 720 780 786 800 832 862 900 936 960 975 1040 1048 1152 1170 1179 1200 1248 1293 1300 1310 1440 1560 1572 1600 1664 1703 1724 1800 1872 1920 1950 1965 2080 2096 2155 2340 2358 2400 2496 2586 2600 2620 2880 2925 3120 3144 3200 3275 3406 3448 3600 3744 3879 3900 3930 4160 4192 4310 4680 4716 4800 4992 5109 5172 5200 5240 5603 5760 5850 5895 6240 6288 6465 6550 6812 6896 7200 7488 7758 7800 7860 8320 8384 8515 8620 9360 9432 9600 9825 10218 10344 10400 10480 10775 11206 11700 11790 12480 12576 12930 13100 13624 13792 14400 14976 15327 15516 15600 15720 16768 16809 17030 17240 18720 18864 19395 19650 20436 20688 20800 20960 21550 22412 23400 23580 24960 25152 25545 25860 26200 27248 27584 28015 28800 29475 30654 31032 31200 31440 32325 33618 34060 34480 37440 37728 38790 39300 40872 41376 41600 41920 42575 43100 44824 46800 47160 50304 50427 51090 51720 52400 54496 55168 56030 56461 58950 61308 62064 62400 62880 64650 67236 68120 68960 74880 75456 76635 77580 78600 81744 82752 83840 84045 85150 86200 89648 93600 94320 96975 100854 102180 103440 104800 108992 112060 112922 117900 122616 124128 124800 125760 127725 129300 134472 136240 137920 140075 150912 153270 155160 157200 163488 165504 168090 169383 170300 172400 179296 187200 188640 193950 201708 204360 206880 209600 217984 224120 225844 235800 245232 248256 251520 252135 255450 258600 268944 272480 275840 280150 282305 306540 310320 314400 326976 336180 338766 340600 344800 358592 374400 377280 383175 387900 403416 408720 413760 419200 420225 448240 451688 471600 490464 496512 504270 508149 510900 517200 537888 544960 560300 564610 613080 620640 628800 653952 672360 677532 681200 689600 717184 733993 754560 766350 775800 806832 817440 827520 840450 846915 896480 903376 943200 980928 1008540 1016298 1021800 1034400 1075776 1089920 1120600 1129220 1226160 1241280 1257600 1260675 1344720 1355064 1362400 1379200 1411525 1467986 1532700 1551600 1613664 1634880 1680900 1693830 1792960 1806752 1886400 1961856 2017080 2032596 2043600 2068800 2151552 2201979 2241200 2258440 2452320 2482560 2521350 2540745 2689440 2710128 2724800 2823050 2935972 3065400 3103200 3227328 3269760 3361800 3387660 3585920 3613504 3669965 3772800 4034160 4065192 4087200 4137600 4234575 4403958 4482400 4516880 4904640 5042700 5081490 5378880 5420256 5449600 5646100 5871944 6130800 6206400 6454656 6605937 6723600 6775320 7227008 7339930 8068320 8130384 8174400 8469150 8807916 8964800 9033760 9809280 10085400 10162980 10757760 10840512 11009895 11292200 11743888 12261600 12412800 12703725 13211874 13447200 13550640 14679860 16136640 16260768 16348800 16938300 17615832 17929600 18067520 18349825 20170800 20325960 21681024 22019790 22584400 23487776 24523200 25407450 26423748 26894400 27101280 29359720 32273280 32521536 33029685 33876600 35231664 36135040 36699650 40341600 40651920 44039580 45168800 46975552 49046400 50814900 52847496 53788800 54202560 55049475 58719440 65043072 66059370 67753200 70463328 73399300 80683200 81303840 88079160 90337600 93951104 101629800 105694992 108405120 110098950 117438880 132118740 135506400 140926656 146798600 161366400 162607680 165148425 176158320 180675200 203259600 211389984 220197900 234877760 264237480 271012800 281853312 293597200 325215360 330296850 352316640 406519200 422779968 440395800 469755520 528474960 542025600 587194400 660593700 704633280 813038400 845559936 880791600 1056949920 1174388800 1321187400 1409266560 1626076800 1761583200 2113899840 2348777600 2642374800 3523166400 4227799680 5284749600 7046332800 10569499200 21138998400
• Sum of all divisors σ(n): 82040999040
• Sum of proper divisors (its aliquot sum) s(n): 60902000640
• 21138998400 is an abundant number, because the sum of its proper divisors (60902000640) is greater than itself. Its abundance is 39763002240

Bases of 21138998400

• Binary: 10011101011111110111000010010000000₂
• Hexadecimal: 0x4EBFB8480
• Base-36: 9PLM3K0

Squares and roots of 21138998400

• 21138998400 squared (21138998400²) is 446857253355202560000
• 21138998400 cubed (21138998400³) is 9446114763704021547515904000000
• The square root of 21138998400 is 145392.5665225015
• The cube root of 21138998400 is 2764.9978755785

Scales and comparisons

• 21,138,998,400 seconds is equal to 672 years, 8 weeks, 8 hours.
• To count from 1 to 21,138,998,400 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 21138998400 cubic inches would be around 230.4 feet tall.

Recreational maths with 21138998400

• 21138998400 backwards is 00489983112
• 21138998400 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21138998400's digits is 45
• More coming soon!