128842946900

Names of 128842946900

• Cardinal: 128842946900 can be written as One hundred twenty-eight billion, eight hundred forty-two million, nine hundred forty-six thousand, nine hundred.

Scientific notation

• Scientific notation: 1.288429469 × 10¹¹

Factors of 128842946900

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 86042

Divisors of 128842946900

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 20 25 41 50 82 100 164 205 367 410 734 820 1025 1468 1835 2050 3670 4100 7340 9175 15047 18350 30094 36700 60188 75235 85627 150470 171254 300940 342508 376175 428135 752350 856270 1504700 1712540 2140675 3510707 4281350 7021414 8562700 14042828 17553535 31425109 35107070 62850218 70214140 87767675 125700436 157125545 175535350 314251090 351070700 628502180 785627725 1288429469 1571255450 2576858938 3142510900 5153717876 6442147345 12884294690 25768589380 32210736725 64421473450 128842946900
• Sum of all divisors σ(n): 287192201856
• Sum of proper divisors (its aliquot sum) s(n): 158349254956
• 128842946900 is an abundant number, because the sum of its proper divisors (158349254956) is greater than itself. Its abundance is 29506308056

Bases of 128842946900

• Binary: 1110111111111101000110101100101010100₂
• Hexadecimal: 0x1DFFA35954
• Base-36: 1N6TRI38

Squares and roots of 128842946900

• 128842946900 squared (128842946900²) is 16600504965876219610000
• 128842946900 cubed (128842946900³) is 2138857979831576075183968709000000
• The square root of 128842946900 is 358946.9973408331
• The cube root of 128842946900 is 5050.7229876881

Scales and comparisons

• 128,842,946,900 seconds is equal to 4,096 years, 41 weeks, 6 days, 19 hours, 28 minutes, 20 seconds.
• To count from 1 to 128,842,946,900 would take you about eight thousand, one hundred ninety-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 128842946900 cubic inches would be around 420.9 feet tall.

Recreational maths with 128842946900

• 128842946900 backwards is 009649248821
• The number of decimal digits it has is: 12
• The sum of 128842946900's digits is 53
• More coming soon!