21015240498090

Names of 21015240498090

• Cardinal: 21015240498090 can be written as Twenty-one trillion, fifteen billion, two hundred forty million, four hundred ninety-eight thousand and ninety.

Scientific notation

• Scientific notation: 2.101524049809 × 10¹³

Factors of 21015240498090

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1096256758

Divisors of 21015240498090

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 71 90 135 142 213 270 355 426 639 710 1065 1278 1917 2130 3195 3834 6390 9585 19170 1096256677 2192513354 3288770031 5481283385 6577540062 9866310093 10962566770 16443850155 19732620186 29598930279 32887700310 49331550465 59197860558 77834224067 98663100930 147994651395 155668448134 233502672201 295989302790 389171120335 467005344402 700508016603 778342240670 1167513361005 1401016033206 2101524049809 2335026722010 3502540083015 4203048099618 7005080166030 10507620249045 21015240498090
• Sum of all divisors σ(n): 56829946187520
• Sum of proper divisors (its aliquot sum) s(n): 35814705689430
• 21015240498090 is an abundant number, because the sum of its proper divisors (35814705689430) is greater than itself. Its abundance is 14799465191340

Bases of 21015240498090

• Binary: 100110001110011111101111100011101101110101010₂
• Hexadecimal: 0x131CFDF1DBAA
• Base-36: 7G69NLFAI

Squares and roots of 21015240498090

• 21015240498090 squared (21015240498090²) is 441640333192562031293648100
• 21015240498090 cubed (21015240498090³) is 9281177815698290862406747464097182129000
• The square root of 21015240498090 is 4584238.2680321055
• The cube root of 21015240498090 is 27595.9143369771

Scales and comparisons

• 21,015,240,498,090 seconds is equal to 668,219 years, 33 weeks, 3 days, 5 hours, 1 minute, 30 seconds.
• To count from 1 to 21,015,240,498,090 would take you about one million, six hundred seventy thousand, five hundred forty-nine 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 21015240498090 cubic inches would be around 2299.7 feet tall.

Recreational maths with 21015240498090

• 21015240498090 backwards is 09089404251012
• 21015240498090 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21015240498090's digits is 45
• More coming soon!