21381475000

Names of 21381475000

• Cardinal: 21381475000 can be written as Twenty-one billion, three hundred eighty-one million, four hundred seventy-five thousand.

Scientific notation

• Scientific notation: 2.1381475 × 10¹⁰

Factors of 21381475000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 672

Divisors of 21381475000

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 20 25 31 40 47 50 62 94 100 124 125 155 188 200 235 248 250 310 376 470 500 587 620 625 775 940 1000 1174 1175 1240 1250 1457 1550 1880 2348 2350 2500 2914 2935 3100 3125 3875 4696 4700 5000 5828 5870 5875 6200 6250 7285 7750 9400 11656 11740 11750 12500 14570 14675 15500 18197 19375 23480 23500 25000 27589 29140 29350 29375 31000 36394 36425 38750 47000 55178 58280 58700 58750 72788 72850 73375 77500 90985 96875 110356 117400 117500 137945 145576 145700 146750 146875 155000 181970 182125 193750 220712 235000 275890 291400 293500 293750 363940 364250 366875 387500 454925 551780 587000 587500 689725 727880 728500 733750 775000 855259 909850 910625 1103560 1175000 1379450 1457000 1467500 1710518 1819700 1821250 1834375 2274625 2758900 2935000 3421036 3448625 3639400 3642500 3668750 4276295 4549250 4553125 5517800 6842072 6897250 7285000 7337500 8552590 9098500 9106250 11373125 13794500 14675000 17105180 17243125 18197000 18212500 21381475 22746250 27589000 34210360 34486250 36425000 42762950 45492500 56865625 68972500 85525900 86215625 90985000 106907375 113731250 137945000 171051800 172431250 213814750 227462500 344862500 427629500 454925000 534536875 689725000 855259000 1069073750 2138147500 2672684375 4276295000 5345368750 10690737500 21381475000
• Sum of all divisors σ(n): 52916613120
• Sum of proper divisors (its aliquot sum) s(n): 31535138120
• 21381475000 is an abundant number, because the sum of its proper divisors (31535138120) is greater than itself. Its abundance is 10153663120

Bases of 21381475000

• Binary: 10011111010011011110110101010111000₂
• Hexadecimal: 0x4FA6F6AB8
• Base-36: 9TLZ7P4

Squares and roots of 21381475000

• 21381475000 squared (21381475000²) is 457167473175625000000
• 21381475000 cubed (21381475000³) is 9774914898517796546875000000000
• The square root of 21381475000 is 146224.0575281647
• The cube root of 21381475000 is 2775.5297530411

Scales and comparisons

• 21,381,475,000 seconds is equal to 679 years, 44 weeks, 6 days, 18 hours, 36 minutes, 40 seconds.
• To count from 1 to 21,381,475,000 would take you about one thousand, three hundred fifty-nine 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 21381475000 cubic inches would be around 231.3 feet tall.

Recreational maths with 21381475000

• 21381475000 backwards is 00057418312
• 21381475000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21381475000's digits is 31
• More coming soon!