1681680420

Names of 1681680420

• Cardinal: 1681680420 can be written as One billion, six hundred eighty-one million, six hundred eighty thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.68168042 × 10⁹

Factors of 1681680420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 69

Divisors of 1681680420

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 23 27 28 29 30 35 36 42 45 46 54 58 60 63 69 70 84 87 90 92 105 108 115 116 126 135 138 140 145 161 174 180 189 203 207 210 230 252 261 270 276 290 315 322 345 348 378 406 414 420 435 460 483 522 529 540 580 609 621 630 644 667 690 756 783 805 812 828 841 870 945 966 1015 1035 1044 1058 1218 1242 1260 1305 1334 1380 1449 1566 1587 1610 1682 1740 1827 1890 1932 2001 2030 2070 2116 2415 2436 2484 2523 2610 2645 2668 2898 3045 3105 3132 3174 3220 3335 3364 3654 3703 3780 3915 4002 4060 4140 4205 4347 4669 4761 4830 5046 5220 5290 5481 5796 5887 6003 6090 6210 6348 6670 7245 7308 7406 7569 7830 7935 8004 8410 8694 9135 9338 9522 9660 10005 10092 10580 10962 11109 11774 12006 12180 12420 12615 13340 14007 14283 14490 14812 15138 15341 15660 15870 16820 17388 17661 18009 18270 18515 18676 19044 19343 20010 21735 21924 22218 22707 23345 23548 23805 24012 25230 27405 28014 28566 28980 29435 30015 30276 30682 31740 33327 35322 36018 36540 37030 37845 38686 40020 42021 43470 44436 45414 46023 46690 47610 50460 52983 54810 55545 56028 57132 58029 58870 60030 61364 66654 70035 70644 71415 72036 74060 75690 76705 77372 84042 86940 88305 90045 90828 92046 93380 95220 96715 99981 105966 107387 109620 111090 113535 116058 117740 120060 126063 133308 135401 138069 140070 142830 151380 153410 158949 166635 168084 174087 176610 180090 184092 193430 199962 210105 211932 214774 222180 227070 230115 232116 252126 264915 270802 276138 280140 285660 290145 306820 317898 322161 333270 348174 353220 360180 386860 399924 406203 414207 420210 429548 444889 454140 460230 499905 504252 522261 529830 536935 541604 552276 580290 630315 635796 644322 666540 677005 690345 696348 794745 812406 828414 840420 870435 889778 920460 966483 999810 1044522 1059660 1073870 1160580 1218609 1260630 1288644 1334667 1354010 1380690 1589490 1610805 1624812 1656828 1740870 1779556 1932966 1999620 2031015 2071035 2089044 2147740 2224445 2437218 2521260 2611305 2669334 2708020 2761380 2899449 3114223 3178980 3221610 3481740 3655827 3865932 4004001 4062030 4142070 4448890 4832415 4874436 5222610 5338668 5798898 6093045 6228446 6443220 6673335 7311654 8008002 8124060 8284140 8897780 9342669 9664830 10445220 11597796 12012003 12186090 12456892 13346670 14497245 14623308 15571115 16016004 18279135 18685338 19329660 20020005 24024006 24372180 26693340 28028007 28994490 31142230 36558270 37370676 40040010 46713345 48048012 56056014 57988980 60060015 62284460 73116540 80080020 84084021 93426690 112112028 120120030 140140035 168168042 186853380 240240060 280280070 336336084 420420105 560560140 840840210 1681680420
• Sum of all divisors σ(n): 6473550720
• Sum of proper divisors (its aliquot sum) s(n): 4791870300
• 1681680420 is an abundant number, because the sum of its proper divisors (4791870300) is greater than itself. Its abundance is 3110189880

Bases of 1681680420

• Binary: 1100100001111000110100000100100₂
• Hexadecimal: 0x643C6824
• Base-36: RT88X0

Squares and roots of 1681680420

• 1681680420 squared (1681680420²) is 2828049035011376400
• 1681680420 cubed (1681680420³) is 4755874688978526169130088000
• The square root of 1681680420 is 41008.2969653703
• The cube root of 1681680420 is 1189.1806190019

Scales and comparisons

• 1,681,680,420 seconds is equal to 53 years, 24 weeks, 3 days, 21 hours, 27 minutes.
• To count from 1 to 1,681,680,420 would take you about one hundred six 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 1681680420 cubic inches would be around 99.1 feet tall.

Recreational maths with 1681680420

• 1681680420 backwards is 0240861861
• 1681680420 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1681680420's digits is 36
• More coming soon!