12921672987

Names of 12921672987

• Cardinal: 12921672987 can be written as Twelve billion, nine hundred twenty-one million, six hundred seventy-two thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 1.2921672987 × 10¹⁰

Factors of 12921672987

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 116

Divisors of 12921672987

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 9 17 23 27 51 69 73 81 153 207 219 243 391 459 529 621 657 729 1173 1241 1377 1587 1679 1863 1971 2187 3519 3723 4131 4761 5037 5589 5913 6561 8993 10557 11169 12393 14283 15111 16767 17739 19683 26979 28543 31671 33507 37179 38617 42849 45333 50301 53217 80937 85629 95013 100521 111537 115851 128547 135999 150903 159651 242811 256887 285039 301563 334611 347553 385641 407997 452709 478953 656489 728433 770661 855117 904689 1042659 1156923 1223991 1436859 1969467 2185299 2311983 2565351 2714067 3127977 3470769 3671973 5908401 6555897 6935949 7696053 8142201 9383931 10412307 11015919 17725203 19667691 20807847 24426603 28151793 33047757 53175609 59003073 62423541 84455379 159526827 177009219 187270623 253366137 478580481 561811869 760098411 1435741443 4307224329 12921672987
• Sum of all divisors σ(n): 21747260304
• Sum of proper divisors (its aliquot sum) s(n): 8825587317
• 12921672987 is a deficient number, because the sum of its proper divisors (8825587317) is less than itself. Its deficiency is 4096085670

Bases of 12921672987

• Binary: 1100000010001100010001010100011011₂
• Hexadecimal: 0x30231151B
• Base-36: 5XP8AOR

Squares and roots of 12921672987

• 12921672987 squared (12921672987²) is 166969632782965502169
• 12921672987 cubed (12921672987³) is 2157526993580954963130057208803
• The square root of 12921672987 is 113673.5368808413
• The cube root of 12921672987 is 2346.6027862821

Scales and comparisons

• 12,921,672,987 seconds is equal to 410 years, 45 weeks, 1 day, 9 hours, 36 minutes, 27 seconds.
• To count from 1 to 12,921,672,987 would take you about eight hundred twenty-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 12921672987 cubic inches would be around 195.6 feet tall.

Recreational maths with 12921672987

• 12921672987 backwards is 78927612921
• The number of decimal digits it has is: 11
• The sum of 12921672987's digits is 54
• More coming soon!