51289980

Names of 51289980

• Cardinal: 51289980 can be written as Fifty-one million, two hundred eighty-nine thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 5.128998 × 10⁷

Factors of 51289980

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4257

Divisors of 51289980

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 29 30 35 42 58 60 70 84 87 105 116 140 145 174 203 210 290 348 406 420 435 580 609 812 870 1015 1218 1740 2030 2436 3045 4060 4211 6090 8422 12180 12633 16844 21055 25266 29477 42110 50532 58954 63165 84220 88431 117908 122119 126330 147385 176862 244238 252660 294770 353724 366357 442155 488476 589540 610595 732714 854833 884310 1221190 1465428 1709666 1768620 1831785 2442380 2564499 3419332 3663570 4274165 5128998 7327140 8548330 10257996 12822495 17096660 25644990 51289980
• Sum of all divisors σ(n): 169827840
• Sum of proper divisors (its aliquot sum) s(n): 118537860
• 51289980 is an abundant number, because the sum of its proper divisors (118537860) is greater than itself. Its abundance is 67247880

Bases of 51289980

• Binary: 11000011101001111101111100₂
• Hexadecimal: 0x30E9F7C
• Base-36: UJBLO

Squares and roots of 51289980

• 51289980 squared (51289980²) is 2630662048400400
• 51289980 cubed (51289980³) is 134926603849215547992000
• The square root of 51289980 is 7161.7023116017
• The cube root of 51289980 is 371.5445055115

Scales and comparisons

• 51,289,980 seconds is equal to 1 year, 32 weeks, 5 days, 15 hours, 13 minutes.
• To count from 1 to 51,289,980 would take you about two 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 51289980 cubic inches would be around 31 feet tall.

Recreational maths with 51289980

• 51289980 backwards is 08998215
• 51289980 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 51289980's digits is 42
• More coming soon!