129428037760

Names of 129428037760

• Cardinal: 129428037760 can be written as One hundred twenty-nine billion, four hundred twenty-eight million, thirty-seven thousand, seven hundred sixty.

Scientific notation

• Scientific notation: 1.2942803776 × 10¹¹

Factors of 129428037760

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 28890201

Divisors of 129428037760

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 280 320 448 560 640 896 1120 2240 4480 28890187 57780374 115560748 144450935 202231309 231121496 288901870 404462618 462242992 577803740 808925236 924485984 1011156545 1155607480 1617850472 1848971968 2022313090 2311214960 3235700944 3697943936 4044626180 4622429920 6471401888 8089252360 9244859840 12942803776 16178504720 18489719680 25885607552 32357009440 64714018880 129428037760
• Sum of all divisors σ(n): 353615901120
• Sum of proper divisors (its aliquot sum) s(n): 224187863360
• 129428037760 is an abundant number, because the sum of its proper divisors (224187863360) is greater than itself. Its abundance is 94759825600

Bases of 129428037760

• Binary: 1111000100010100000110010000010000000₂
• Hexadecimal: 0x1E22832080
• Base-36: 1NGI4134

Squares and roots of 129428037760

• 129428037760 squared (129428037760²) is 16751616958403985817600
• 129428037760 cubed (129428037760³) is 2168128912233367425734837272576000
• The square root of 129428037760 is 359761.0842767739
• The cube root of 129428037760 is 5058.3567515821

Scales and comparisons

• 129,428,037,760 seconds is equal to 4,115 years, 21 weeks, 2 days, 16 hours, 42 minutes, 40 seconds.
• To count from 1 to 129,428,037,760 would take you about eight thousand, two hundred thirty 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 129428037760 cubic inches would be around 421.5 feet tall.

Recreational maths with 129428037760

• 129428037760 backwards is 067730824921
• The number of decimal digits it has is: 12
• The sum of 129428037760's digits is 49
• More coming soon!