1621669920

Names of 1621669920

• Cardinal: 1621669920 can be written as One billion, six hundred twenty-one million, six hundred sixty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.62166992 × 10⁹

Factors of 1621669920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 20014

Divisors of 1621669920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 65 78 80 96 104 120 130 156 160 169 195 208 240 260 312 338 390 416 480 507 520 624 676 780 845 1014 1040 1248 1352 1560 1690 2028 2080 2535 2704 3120 3380 4056 5070 5408 6240 6760 8112 10140 13520 16224 19991 20280 27040 39982 40560 59973 79964 81120 99955 119946 159928 199910 239892 259883 299865 319856 399820 479784 519766 599730 639712 779649 799640 959568 1039532 1199460 1299415 1559298 1599280 1919136 2079064 2398920 2598830 3118596 3198560 3378479 3898245 4158128 4797840 5197660 6237192 6756958 7796490 8316256 9595680 10135437 10395320 12474384 13513916 15592980 16892395 20270874 20790640 24948768 27027832 31185960 33784790 40541748 41581280 50677185 54055664 62371920 67569580 81083496 101354370 108111328 124743840 135139160 162166992 202708740 270278320 324333984 405417480 540556640 810834960 1621669920
• Sum of all divisors σ(n): 5531706432
• Sum of proper divisors (its aliquot sum) s(n): 3910036512
• 1621669920 is an abundant number, because the sum of its proper divisors (3910036512) is greater than itself. Its abundance is 2288366592

Bases of 1621669920

• Binary: 1100000101010001011100000100000₂
• Hexadecimal: 0x60A8B820
• Base-36: QTI0IO

Squares and roots of 1621669920

• 1621669920 squared (1621669920²) is 2629813329432806400
• 1621669920 cubed (1621669920³) is 4264689171556232800063488000
• The square root of 1621669920 is 40269.9629997347
• The cube root of 1621669920 is 1174.8637041245

Scales and comparisons

• 1,621,669,920 seconds is equal to 51 years, 29 weeks, 2 days, 7 hours, 52 minutes.
• To count from 1 to 1,621,669,920 would take you about one hundred three 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 1621669920 cubic inches would be around 97.9 feet tall.

Recreational maths with 1621669920

• 1621669920 backwards is 0299661261
• The number of decimal digits it has is: 10
• The sum of 1621669920's digits is 42
• More coming soon!