6399136728

Names of 6399136728

• Cardinal: 6399136728 can be written as Six billion, three hundred ninety-nine million, one hundred thirty-six thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 6.399136728 × 10⁹

Factors of 6399136728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1052

Divisors of 6399136728

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 23 24 27 36 46 54 69 72 81 92 108 138 162 167 184 207 216 243 276 324 334 414 486 501 552 621 648 668 828 857 972 1002 1242 1336 1503 1656 1714 1863 1944 2004 2484 2571 3006 3428 3726 3841 4008 4509 4968 5142 5589 6012 6856 7452 7682 7713 9018 10284 11178 11523 12024 13527 14904 15364 15426 18036 19711 20568 22356 23046 23139 27054 30728 30852 34569 36072 39422 40581 44712 46092 46278 54108 59133 61704 69138 69417 78844 81162 92184 92556 103707 108216 118266 138276 138834 143119 157688 162324 177399 185112 207414 208251 236532 276552 277668 286238 311121 324648 354798 414828 416502 429357 473064 532197 555336 572476 622242 709596 829656 833004 858714 933363 1064394 1144952 1244484 1288071 1419192 1596591 1666008 1717428 1866726 2128788 2488968 2576142 3193182 3291737 3434856 3733452 3864213 4257576 4789773 5152284 6386364 6583474 7466904 7728426 9579546 9875211 10304568 11592639 12772728 13166948 15456852 19159092 19750422 23185278 26333896 29625633 30913704 34777917 38318184 39500844 46370556 59251266 69555834 79001688 88876899 92741112 118502532 139111668 177753798 237005064 266630697 278223336 355507596 533261394 711015192 799892091 1066522788 1599784182 2133045576 3199568364 6399136728
• Sum of all divisors σ(n): 18888629760
• Sum of proper divisors (its aliquot sum) s(n): 12489493032
• 6399136728 is an abundant number, because the sum of its proper divisors (12489493032) is greater than itself. Its abundance is 6090356304

Bases of 6399136728

• Binary: 101111101011010110001001111011000₂
• Hexadecimal: 0x17D6B13D8
• Base-36: 2XTVPI0

Squares and roots of 6399136728

• 6399136728 squared (6399136728²) is 40948950863638545984
• 6399136728 cubed (6399136728³) is 262037935444576739322731300352
• The square root of 6399136728 is 79994.6043680447
• The cube root of 6399136728 is 1856.5520514899

Scales and comparisons

• 6,399,136,728 seconds is equal to 203 years, 24 weeks, 4 days, 1 hour, 58 minutes, 48 seconds.
• To count from 1 to 6,399,136,728 would take you about four hundred six 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 6399136728 cubic inches would be around 154.7 feet tall.

Recreational maths with 6399136728

• 6399136728 backwards is 8276319936
• 6399136728 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6399136728's digits is 54
• More coming soon!