2820420864

Names of 2820420864

• Cardinal: 2820420864 can be written as Two billion, eight hundred twenty million, four hundred twenty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.820420864 × 10⁹

Factors of 2820420864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 7757

Divisors of 2820420864

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 53 54 64 72 96 106 108 128 144 159 192 212 216 256 288 318 384 424 432 477 576 636 768 848 864 954 1152 1272 1431 1696 1728 1908 2304 2544 2862 3392 3456 3816 5088 5724 6784 6912 7632 7699 10176 11448 13568 15264 15398 20352 22896 23097 30528 30796 40704 45792 46194 61056 61592 69291 91584 92388 122112 123184 138582 183168 184776 207873 246368 277164 366336 369552 408047 415746 492736 554328 739104 816094 831492 985472 1108656 1224141 1478208 1632188 1662984 1970944 2217312 2448282 2956416 3264376 3325968 3672423 4434624 4896564 5912832 6528752 6651936 7344846 8869248 9793128 11017269 13057504 13303872 14689692 17738496 19586256 22034538 26115008 26607744 29379384 39172512 44069076 52230016 53215488 58758768 78345024 88138152 104460032 117517536 156690048 176276304 235035072 313380096 352552608 470070144 705105216 940140288 1410210432 2820420864
• Sum of all divisors σ(n): 8498952000
• Sum of proper divisors (its aliquot sum) s(n): 5678531136
• 2820420864 is an abundant number, because the sum of its proper divisors (5678531136) is greater than itself. Its abundance is 2858110272

Bases of 2820420864

• Binary: 10101000000111000011010100000000₂
• Hexadecimal: 0xA81C3500
• Base-36: 1AN7EO0

Squares and roots of 2820420864

• 2820420864 squared (2820420864²) is 7954773850086506496
• 2820420864 cubed (2820420864³) is 22435810135185591126189932544
• The square root of 2820420864 is 53107.6347053793
• The cube root of 2820420864 is 1412.8779245513

Scales and comparisons

• 2,820,420,864 seconds is equal to 89 years, 35 weeks, 2 days, 18 hours, 14 minutes, 24 seconds.
• To count from 1 to 2,820,420,864 would take you about one hundred seventy-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 2820420864 cubic inches would be around 117.7 feet tall.

Recreational maths with 2820420864

• 2820420864 backwards is 4680240282
• 2820420864 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 2820420864's digits is 36
• More coming soon!