7149129728

Names of 7149129728

• Cardinal: 7149129728 can be written as Seven billion, one hundred forty-nine million, one hundred twenty-nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 7.149129728 × 10⁹

Factors of 7149129728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 178

Divisors of 7149129728

• Number of divisors d(n): 208
• Complete list of divisors:
  1 2 4 8 13 16 26 31 32 52 61 62 64 71 104 122 124 128 142 208 244 248 256 284 403 416 488 496 512 568 793 806 832 923 976 992 1024 1136 1586 1612 1664 1846 1891 1952 1984 2048 2201 2272 3172 3224 3328 3692 3782 3904 3968 4096 4331 4402 4544 6344 6448 6656 7384 7564 7808 7936 8662 8804 9088 12688 12896 13312 14768 15128 15616 15872 17324 17608 18176 24583 25376 25792 26624 28613 29536 30256 31232 31744 34648 35216 36352 49166 50752 51584 53248 56303 57226 59072 60512 62464 63488 69296 70432 72704 98332 101504 103168 112606 114452 118144 121024 124928 126976 134261 138592 140864 145408 196664 203008 206336 225212 228904 236288 242048 249856 268522 277184 281728 290816 393328 406016 412672 450424 457808 472576 484096 537044 554368 563456 786656 812032 825344 900848 915616 945152 968192 1074088 1108736 1126912 1573312 1624064 1650688 1745393 1801696 1831232 1890304 1936384 2148176 2217472 2253824 3146624 3248128 3490786 3603392 3662464 3780608 3872768 4296352 4434944 4507648 6293248 6981572 7206784 7324928 7745536 8592704 8869888 9015296 12586496 13963144 14413568 14649856 17185408 17739776 25172992 27926288 28827136 29299712 34370816 50345984 55852576 57654272 58599424 68741632 100691968 111705152 115308544 117198848 137483264 223410304 230617088 274966528 446820608 549933056 893641216 1787282432 3574564864 7149129728
• Sum of all divisors σ(n): 16380951552
• Sum of proper divisors (its aliquot sum) s(n): 9231821824
• 7149129728 is an abundant number, because the sum of its proper divisors (9231821824) is greater than itself. Its abundance is 2082692096

Bases of 7149129728

• Binary: 110101010000111110001000000000000₂
• Hexadecimal: 0x1AA1F1000
• Base-36: 3A8ENSW

Squares and roots of 7149129728

• 7149129728 squared (7149129728²) is 51110055867773353984
• 7149129728 cubed (7149129728³) is 365392419804039322133281636352
• The square root of 7149129728 is 84552.5264436255
• The cube root of 7149129728 is 1926.4203586477

Scales and comparisons

• 7,149,129,728 seconds is equal to 227 years, 16 weeks, 4 days, 13 hours, 22 minutes, 8 seconds.
• To count from 1 to 7,149,129,728 would take you about four hundred fifty-four 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 7149129728 cubic inches would be around 160.5 feet tall.

Recreational maths with 7149129728

• 7149129728 backwards is 8279219417
• The number of decimal digits it has is: 10
• The sum of 7149129728's digits is 50
• More coming soon!