21498931908

Names of 21498931908

• Cardinal: 21498931908 can be written as Twenty-one billion, four hundred ninety-eight million, nine hundred thirty-one thousand, nine hundred eight.

Scientific notation

• Scientific notation: 2.1498931908 × 10¹⁰

Factors of 21498931908

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1156

Divisors of 21498931908

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 18 19 36 38 57 76 83 114 166 171 228 249 332 342 361 498 684 722 747 996 1049 1083 1444 1494 1577 2098 2166 2988 3147 3154 3249 4196 4332 4731 6294 6308 6498 6859 9441 9462 12588 12996 13718 14193 18882 18924 19931 20577 27436 28386 29963 37764 39862 41154 56772 59793 59926 61731 79724 82308 87067 89889 119586 119852 123462 174134 179379 179778 239172 246924 261201 269667 348268 358758 359556 378689 522402 539334 569297 717516 757378 783603 1044804 1078668 1136067 1138594 1514756 1567206 1654273 1707891 2272134 2277188 3134412 3308546 3408201 3415782 4544268 4962819 5123673 6617092 6816402 6831564 7195091 9925638 10247346 13632804 14390182 14888457 19851276 20494692 21585273 28780364 29776914 31431187 43170546 59553828 62862374 64755819 86341092 94293561 125724748 129511638 188587122 259023276 282880683 377174244 565761366 597192553 1131522732 1194385106 1791577659 2388770212 3583155318 5374732977 7166310636 10749465954 21498931908
• Sum of all divisors σ(n): 58109688000
• Sum of proper divisors (its aliquot sum) s(n): 36610756092
• 21498931908 is an abundant number, because the sum of its proper divisors (36610756092) is greater than itself. Its abundance is 15111824184

Bases of 21498931908

• Binary: 10100000001011011111010101011000100₂
• Hexadecimal: 0x5016FAAC4
• Base-36: 9VJWQ10

Squares and roots of 21498931908

• 21498931908 squared (21498931908²) is 462204073184820520464
• 21498931908 cubed (21498931908³) is 9936893897000705068656656565312
• The square root of 21498931908 is 146625.1407774261
• The cube root of 21498931908 is 2780.6028361595

Scales and comparisons

• 21,498,931,908 seconds is equal to 683 years, 31 weeks, 1 day, 5 hours, 31 minutes, 48 seconds.
• To count from 1 to 21,498,931,908 would take you about one thousand, three hundred sixty-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 21498931908 cubic inches would be around 231.7 feet tall.

Recreational maths with 21498931908

• 21498931908 backwards is 80913989412
• The number of decimal digits it has is: 11
• The sum of 21498931908's digits is 54
• More coming soon!