21004676420

Names of 21004676420

• Cardinal: 21004676420 can be written as Twenty-one billion, four million, six hundred seventy-six thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.100467642 × 10¹⁰

Factors of 21004676420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1296

Divisors of 21004676420

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 79 91 130 139 140 158 182 260 278 316 364 395 455 553 556 695 790 910 973 1027 1051 1106 1390 1580 1807 1820 1946 2054 2102 2212 2765 2780 3614 3892 4108 4204 4865 5135 5255 5530 7189 7228 7357 9035 9730 10270 10510 10981 11060 12649 13663 14378 14714 18070 19460 20540 21020 21962 25298 27326 28756 29428 35945 36140 36785 43924 50596 54652 54905 63245 68315 71890 73570 76867 83029 95641 109810 126490 136630 142753 143780 146089 147140 153734 166058 191282 219620 252980 273260 285506 292178 307468 332116 382564 384335 415145 478205 571012 581203 584356 713765 730445 768670 830290 956410 999271 1022623 1079377 1162406 1427530 1460890 1537340 1660580 1899157 1912820 1998542 2045246 2158754 2324812 2855060 2906015 2921780 3798314 3997084 4090492 4317508 4996355 5113115 5396885 5812030 7555639 7596628 9495785 9992710 10226230 10793770 11541031 11624060 13294099 15111278 18991570 19985420 20452460 21587540 23082062 26588198 30222556 37778195 37983140 46164124 53176396 57705155 66470495 75556390 80787217 115410310 132940990 150033403 151112780 161574434 230820620 265881980 300066806 323148868 403936085 600133612 750167015 807872170 1050233821 1500334030 1615744340 2100467642 3000668060 4200935284 5251169105 10502338210 21004676420
• Sum of all divisors σ(n): 55424409600
• Sum of proper divisors (its aliquot sum) s(n): 34419733180
• 21004676420 is an abundant number, because the sum of its proper divisors (34419733180) is greater than itself. Its abundance is 13415056760

Bases of 21004676420

• Binary: 10011100011111110011110110101000100₂
• Hexadecimal: 0x4E3F9ED44
• Base-36: 9NDN41W

Squares and roots of 21004676420

• 21004676420 squared (21004676420²) is 441196431508904016400
• 21004676420 cubed (21004676420³) is 9267188281503221213320373288000
• The square root of 21004676420 is 144929.9017456371
• The cube root of 21004676420 is 2759.1289530577

Scales and comparisons

• 21,004,676,420 seconds is equal to 667 years, 45 weeks, 6 days, 16 hours, 20 minutes, 20 seconds.
• To count from 1 to 21,004,676,420 would take you about one thousand, three hundred thirty-five 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 21004676420 cubic inches would be around 229.9 feet tall.

Recreational maths with 21004676420

• 21004676420 backwards is 02467640012
• The number of decimal digits it has is: 11
• The sum of 21004676420's digits is 32
• More coming soon!