72987381831

Names of 72987381831

• Cardinal: 72987381831 can be written as Seventy-two billion, nine hundred eighty-seven million, three hundred eighty-one thousand, eight hundred thirty-one.

Scientific notation

• Scientific notation: 7.2987381831 × 10¹⁰

Factors of 72987381831

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2444

Divisors of 72987381831

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 13 19 21 39 57 91 133 169 247 273 399 507 601 741 1183 1729 1801 1803 3211 3549 4207 5187 5403 7813 9633 11419 12607 12621 22477 23413 23439 34219 34257 37821 54691 67431 70239 79933 101569 102657 148447 163891 164073 239533 239799 304369 304707 444847 445341 491673 710983 718599 913107 1039129 1082401 1334541 1929811 2130583 2132949 3113929 3117387 3247203 5783011 5789433 6391749 7576807 9341787 13508677 14071213 17349033 20565619 22730421 40481077 40526031 42213639 61696857 98498491 121443231 143959333 182925769 267353047 295495473 431877999 548777307 802059141 1280480383 1871471329 3475589611 3841441149 5614413987 10426768833 24329127277 72987381831
• Sum of all divisors σ(n): 127052244480
• Sum of proper divisors (its aliquot sum) s(n): 54064862649
• 72987381831 is a deficient number, because the sum of its proper divisors (54064862649) is less than itself. Its deficiency is 18922519182

Bases of 72987381831

• Binary: 1000011111110011000110001000001000111₂
• Hexadecimal: 0x10FE631047
• Base-36: XJ2SW93

Squares and roots of 72987381831

• 72987381831 squared (72987381831²) is 5327157906544188912561
• 72987381831 cubed (72987381831³) is 388815308198971329835286379079191
• The square root of 72987381831 is 270161.7697436113
• The cube root of 72987381831 is 4179.0983806413

Scales and comparisons

• 72,987,381,831 seconds is equal to 2,320 years, 40 weeks, 1 day, 8 hours, 43 minutes, 51 seconds.
• To count from 1 to 72,987,381,831 would take you about four thousand, six hundred forty-one 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 72987381831 cubic inches would be around 348.3 feet tall.

Recreational maths with 72987381831

• 72987381831 backwards is 13818378927
• 72987381831 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 72987381831's digits is 57
• More coming soon!