21135798768

Names of 21135798768

• Cardinal: 21135798768 can be written as Twenty-one billion, one hundred thirty-five million, seven hundred ninety-eight thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1135798768 × 10¹⁰

Factors of 21135798768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 169618

Divisors of 21135798768

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 53 56 84 98 106 112 147 159 168 196 212 294 318 336 371 392 424 588 636 742 784 848 1113 1176 1272 1484 2226 2352 2544 2597 2968 4452 5194 5936 7791 8904 10388 15582 17808 20776 31164 41552 62328 124656 169553 339106 508659 678212 1017318 1186871 1356424 2034636 2373742 2712848 3560613 4069272 4747484 7121226 8138544 8308097 8986309 9494968 14242452 16616194 17972618 18989936 24924291 26958927 28484904 33232388 35945236 49848582 53917854 56969808 62904163 66464776 71890472 99697164 107835708 125808326 132929552 143780944 188712489 199394328 215671416 251616652 377424978 398788656 431342832 440329141 503233304 754849956 880658282 1006466608 1320987423 1509699912 1761316564 2641974846 3019399824 3522633128 5283949692 7045266256 10567899384 21135798768
• Sum of all divisors σ(n): 64714014288
• Sum of proper divisors (its aliquot sum) s(n): 43578215520
• 21135798768 is an abundant number, because the sum of its proper divisors (43578215520) is greater than itself. Its abundance is 22442416752

Bases of 21135798768

• Binary: 10011101011110010101011000111110000₂
• Hexadecimal: 0x4EBCAB1F0
• Base-36: 9PJPIPC

Squares and roots of 21135798768

• 21135798768 squared (21135798768²) is 446721989561390317824
• 21135798768 cubed (21135798768³) is 9441826076610142339831627640832
• The square root of 21135798768 is 145381.5626824805
• The cube root of 21135798768 is 2764.8583637327

Scales and comparisons

• 21,135,798,768 seconds is equal to 672 years, 2 weeks, 5 days, 7 hours, 12 minutes, 48 seconds.
• To count from 1 to 21,135,798,768 would take you about one thousand, three hundred forty-four 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 21135798768 cubic inches would be around 230.4 feet tall.

Recreational maths with 21135798768

• 21135798768 backwards is 86789753112
• The number of decimal digits it has is: 11
• The sum of 21135798768's digits is 57
• More coming soon!