728641649664

Names of 728641649664

• Cardinal: 728641649664 can be written as Seven hundred twenty-eight billion, six hundred forty-one million, six hundred forty-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 7.28641649664 × 10¹¹

Factors of 728641649664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1633

Divisors of 728641649664

• Number of divisors d(n): 198
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 62 64 72 93 96 124 128 144 186 192 248 256 279 288 372 384 496 512 558 576 744 768 992 1024 1116 1152 1488 1536 1597 1984 2232 2304 2976 3072 3194 3968 4464 4608 4791 5952 6388 7936 8928 9216 9582 11904 12776 14373 15872 17856 19164 23808 25552 28746 31744 35712 38328 47616 49507 51104 57492 71424 76656 95232 99014 102208 114984 142848 148521 153312 198028 204416 229968 285696 297042 306624 396056 408832 445563 459936 594084 613248 792112 817664 891126 919872 1188168 1226496 1584224 1635328 1782252 1839744 2376336 2452992 2550409 3168448 3564504 3679488 4752672 4905984 5100818 6336896 7129008 7358976 7651227 9505344 10201636 12673792 14258016 14717952 15302454 19010688 20403272 22953681 25347584 28516032 30604908 38021376 40806544 45907362 50695168 57032064 61209816 76042752 79062679 81613088 91814724 114064128 122419632 152085504 158125358 163226176 183629448 228128256 237188037 244839264 316250716 326452352 367258896 456256512 474376074 489678528 632501432 652904704 711564111 734517792 948752148 979357056 1265002864 1305809408 1423128222 1469035584 1897504296 1958714112 2530005728 2611618816 2846256444 2938071168 3795008592 3917428224 5060011456 5692512888 5876142336 7590017184 7834856448 10120022912 11385025776 11752284672 15180034368 20240045824 22770051552 23504569344 30360068736 40480091648 45540103104 60720137472 80960183296 91080206208 121440274944 182160412416 242880549888 364320824832 728641649664
• Sum of all divisors σ(n): 2173166664864
• Sum of proper divisors (its aliquot sum) s(n): 1444525015200
• 728641649664 is an abundant number, because the sum of its proper divisors (1444525015200) is greater than itself. Its abundance is 715883365536

Bases of 728641649664

• Binary: 1010100110100110011011010011110000000000₂
• Hexadecimal: 0xA9A66D3C00
• Base-36: 9AQEFB40

Squares and roots of 728641649664

• 728641649664 squared (728641649664²) is 530918653625075311312896
• 728641649664 cubed (728641649664³) is 386849443614764688591266903117266944
• The square root of 728641649664 is 853605.0899941963
• The cube root of 728641649664 is 8998.5250655577

Scales and comparisons

• 728,641,649,664 seconds is equal to 23,168 years, 28 weeks, 4 days, 10 hours, 14 minutes, 24 seconds.
• To count from 1 to 728,641,649,664 would take you about forty-six thousand, three hundred thirty-seven 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 728641649664 cubic inches would be around 749.9 feet tall.

Recreational maths with 728641649664

• 728641649664 backwards is 466946146827
• The number of decimal digits it has is: 12
• The sum of 728641649664's digits is 63
• More coming soon!