21438014892

Names of 21438014892

• Cardinal: 21438014892 can be written as Twenty-one billion, four hundred thirty-eight million, fourteen thousand, eight hundred ninety-two.

Scientific notation

• Scientific notation: 2.1438014892 × 10¹⁰

Factors of 21438014892

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 76

Divisors of 21438014892

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 23 28 41 42 46 49 69 82 84 92 98 123 138 147 161 164 196 246 276 287 294 322 483 492 529 574 588 644 861 943 966 1058 1127 1148 1587 1681 1722 1886 1932 2009 2116 2254 2829 3174 3362 3381 3444 3703 3772 4018 4508 5043 5658 6027 6348 6601 6724 6762 7406 8036 10086 11109 11316 11767 12054 13202 13524 14812 19803 20172 21689 22218 23534 24108 25921 26404 35301 38663 39606 43378 44436 46207 47068 51842 65067 68921 70602 77326 77763 79212 82369 86756 92414 103684 115989 130134 137842 138621 141204 151823 154652 155526 164738 184828 206763 231978 247107 260268 270641 275684 277242 303646 311052 329476 413526 455469 463956 482447 494214 541282 554484 607292 811923 827052 889249 910938 964894 988428 1062761 1082564 1447341 1585183 1623846 1778498 1821876 1894487 1929788 2125522 2667747 2894682 3170366 3188283 3247692 3377129 3556996 3788974 4251044 4755549 5335494 5683461 5789364 6224743 6340732 6376566 6754258 7577948 9511098 10131387 10670988 11096281 11366922 12449486 12753132 13508516 18674229 19022196 20262774 22192562 22733844 24898972 33288843 36459209 37348458 40525548 43573201 44385124 66577686 72918418 74696916 77673967 87146402 109377627 130719603 133155372 145836836 155347934 174292804 218755254 233021901 255214463 261439206 310695868 437510508 466043802 510428926 522878412 765643389 932087604 1020857852 1531286778 1786501241 3062573556 3573002482 5359503723 7146004964 10719007446 21438014892
• Sum of all divisors σ(n): 62349546672
• Sum of proper divisors (its aliquot sum) s(n): 40911531780
• 21438014892 is an abundant number, because the sum of its proper divisors (40911531780) is greater than itself. Its abundance is 19473516888

Bases of 21438014892

• Binary: 10011111101110011100010010110101100₂
• Hexadecimal: 0x4FDCE25AC
• Base-36: 9UJN25O

Squares and roots of 21438014892

• 21438014892 squared (21438014892²) is 459588482509613771664
• 21438014892 cubed (21438014892³) is 9852664732232781570101119620288
• The square root of 21438014892 is 146417.2629576171
• The cube root of 21438014892 is 2777.9740813133

Scales and comparisons

• 21,438,014,892 seconds is equal to 681 years, 34 weeks, 3 days, 4 hours, 8 minutes, 12 seconds.
• To count from 1 to 21,438,014,892 would take you about one thousand, three hundred sixty-three 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 21438014892 cubic inches would be around 231.5 feet tall.

Recreational maths with 21438014892

• 21438014892 backwards is 29841083412
• 21438014892 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21438014892's digits is 42
• More coming soon!