21285358848

Names of 21285358848

• Cardinal: 21285358848 can be written as Twenty-one billion, two hundred eighty-five million, three hundred fifty-eight thousand, eight hundred forty-eight.

Scientific notation

• Scientific notation: 2.1285358848 × 10¹⁰

Factors of 21285358848

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 299

Divisors of 21285358848

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 81 96 104 108 117 128 144 156 162 192 208 216 234 256 281 288 312 324 351 384 416 432 468 562 576 624 648 702 768 832 843 864 936 1053 1124 1152 1248 1296 1404 1664 1686 1728 1872 2106 2248 2304 2496 2529 2592 2808 3328 3372 3456 3653 3744 4212 4496 4992 5058 5184 5616 6744 6912 7306 7488 7587 8424 8992 9984 10116 10368 10959 11232 13488 14612 14976 15174 16848 17984 20232 20736 21918 22464 22761 26976 29224 29952 30348 32877 33696 35968 40464 43836 44928 45522 53952 58448 60696 65754 67392 71936 78961 80928 87672 89856 91044 98631 107904 116896 121392 131508 134784 157922 161856 175344 182088 197262 215808 233792 236883 242784 263016 269568 295893 315844 323712 350688 364176 394524 467584 473766 485568 526032 591786 631688 647424 701376 710649 728352 789048 935168 947532 971136 1026493 1052064 1183572 1263376 1402752 1421298 1456704 1578096 1895064 1942272 2052986 2104128 2131947 2367144 2526752 2805504 2842596 2913408 3079479 3156192 3790128 4105972 4208256 4263894 4734288 5053504 5685192 5826816 6158958 6312384 6395841 7580256 8211944 8416512 8527788 9238437 9468576 10107008 11370384 12317916 12624768 12791682 15160512 16423888 17055576 18476874 18937152 20214016 22740768 24635832 25249536 25583364 27715311 30321024 32847776 34111152 36953748 37874304 45481536 49271664 51166728 55430622 60642048 65695552 68222304 73907496 75748608 83145933 90963072 98543328 102333456 110861244 131391104 136444608 147814992 166291866 181926144 197086656 204666912 221722488 262782208 272889216 295629984 332583732 394173312 409333824 443444976 545778432 591259968 665167464 788346624 818667648 886889952 1182519936 1330334928 1637335296 1773779904 2365039872 2660669856 3547559808 5321339712 7095119616 10642679424 21285358848
• Sum of all divisors σ(n): 68595435062
• Sum of proper divisors (its aliquot sum) s(n): 47310076214
• 21285358848 is an abundant number, because the sum of its proper divisors (47310076214) is greater than itself. Its abundance is 26024717366

Bases of 21285358848

• Binary: 10011110100101101001100110100000000₂
• Hexadecimal: 0x4F4B4CD00
• Base-36: 9S0R400

Squares and roots of 21285358848

• 21285358848 squared (21285358848²) is 453066501288131887104
• 21285358848 cubed (21285358848³) is 9643683061925741460560063496192
• The square root of 21285358848 is 145895.0268103749
• The cube root of 21285358848 is 2771.3645589047

Scales and comparisons

• 21,285,358,848 seconds is equal to 676 years, 42 weeks, 7 hours, 40 minutes, 48 seconds.
• To count from 1 to 21,285,358,848 would take you about one thousand, three hundred fifty-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 21285358848 cubic inches would be around 230.9 feet tall.

Recreational maths with 21285358848

• 21285358848 backwards is 84885358212
• 21285358848 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21285358848's digits is 54
• More coming soon!