20869397920

Names of 20869397920

• Cardinal: 20869397920 can be written as Twenty billion, eight hundred sixty-nine million, three hundred ninety-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.086939792 × 10¹⁰

Factors of 20869397920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 9768

Divisors of 20869397920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 70 80 98 112 140 160 196 224 245 280 281 392 490 560 562 784 980 1120 1124 1405 1568 1960 1967 2248 2810 3920 3934 4496 5620 7840 7868 8992 9473 9835 11240 13769 15736 18946 19670 22480 27538 31472 37892 39340 44960 47365 55076 62944 66311 68845 75784 78680 94730 110152 132622 137690 151568 157360 189460 220304 265244 275380 303136 314720 331555 378920 440608 464177 530488 550760 663110 757840 928354 1060976 1101520 1326220 1515680 1856708 2121952 2203040 2320885 2652440 2661913 3713416 4641770 5304880 5323826 7426832 9283540 10609760 10647652 13309565 14853664 18567080 18633391 21295304 26619130 37134160 37266782 42590608 53238260 74268320 74533564 85181216 93166955 106476520 130433737 149067128 186333910 212953040 260867474 298134256 372667820 425906080 521734948 596268512 652168685 745335640 1043469896 1304337370 1490671280 2086939792 2608674740 2981342560 4173879584 5217349480 10434698960 20869397920
• Sum of all divisors σ(n): 57563758728
• Sum of proper divisors (its aliquot sum) s(n): 36694360808
• 20869397920 is an abundant number, because the sum of its proper divisors (36694360808) is greater than itself. Its abundance is 15824962888

Bases of 20869397920

• Binary: 10011011011111010011011110110100000₂
• Hexadecimal: 0x4DBE9BDA0
• Base-36: 9L53MHS

Squares and roots of 20869397920

• 20869397920 squared (20869397920²) is 435531769543300326400
• 20869397920 cubed (20869397920³) is 9089285805400871181707481088000
• The square root of 20869397920 is 144462.4446698865
• The cube root of 20869397920 is 2753.1928939827

Scales and comparisons

• 20,869,397,920 seconds is equal to 663 years, 30 weeks, 1 day, 22 hours, 58 minutes, 40 seconds.
• To count from 1 to 20,869,397,920 would take you about one thousand, three hundred twenty-seven 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 20869397920 cubic inches would be around 229.4 feet tall.

Recreational maths with 20869397920

• 20869397920 backwards is 02979396802
• The number of decimal digits it has is: 11
• The sum of 20869397920's digits is 55
• More coming soon!