72729928832

Names of 72729928832

• Cardinal: 72729928832 can be written as Seventy-two billion, seven hundred twenty-nine million, nine hundred twenty-eight thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 7.2729928832 × 10¹⁰

Factors of 72729928832

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 210

Divisors of 72729928832

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 64 88 121 128 176 197 242 352 394 484 704 788 968 1331 1408 1576 1936 2167 2662 3152 3872 4334 5324 6304 7744 8668 10648 12608 14641 15488 17336 21296 23837 25216 29282 34672 38809 42592 47674 58564 69344 77618 85184 95348 117128 138688 155236 170368 190696 234256 262207 277376 310472 381392 426899 468512 524414 620944 762784 853798 937024 1048828 1241888 1525568 1707596 1874048 2097656 2483776 2884277 3051136 3415192 4195312 4695889 4967552 5768554 6830384 8390624 9391778 11537108 13660768 16781248 18783556 23074216 27321536 33562496 37567112 46148432 51654779 54643072 75134224 92296864 103309558 150268448 184593728 206619116 300536896 369187456 413238232 568202569 601073792 826476464 1136405138 1652952928 2272810276 3305905856 4545620552 6611811712 9091241104 18182482208 36364964416 72729928832
• Sum of all divisors σ(n): 160192972425
• Sum of proper divisors (its aliquot sum) s(n): 87463043593
• 72729928832 is an abundant number, because the sum of its proper divisors (87463043593) is greater than itself. Its abundance is 14733114761

Bases of 72729928832

• Binary: 1000011101111000010101010010010000000₂
• Hexadecimal: 0x10EF0AA480
• Base-36: XETIS8W

Squares and roots of 72729928832

• 72729928832 squared (72729928832²) is 5289642547907784884224
• 72729928832 cubed (72729928832³) is 384715326056052345128376879546368
• The square root of 72729928832 is 269684.8694902997
• The cube root of 72729928832 is 4174.1788592835

Scales and comparisons

• 72,729,928,832 seconds is equal to 2,312 years, 30 weeks, 3 days, 14 hours, 32 seconds.
• To count from 1 to 72,729,928,832 would take you about four thousand, six hundred twenty-five 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 72729928832 cubic inches would be around 347.8 feet tall.

Recreational maths with 72729928832

• 72729928832 backwards is 23882992727
• The number of decimal digits it has is: 11
• The sum of 72729928832's digits is 59
• More coming soon!