21011328

Names of 21011328

• Cardinal: 21011328 can be written as Twenty-one million, eleven thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1011328 × 10⁷

Factors of 21011328

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 102

Divisors of 21011328

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 23 24 26 32 36 39 46 48 52 61 64 69 72 78 92 96 104 117 122 128 138 144 156 183 184 192 207 208 234 244 276 288 299 312 366 368 384 414 416 468 488 549 552 576 598 624 732 736 793 828 832 897 936 976 1098 1104 1152 1196 1248 1403 1464 1472 1586 1656 1664 1794 1872 1952 2196 2208 2379 2392 2496 2691 2806 2928 2944 3172 3312 3588 3744 3904 4209 4392 4416 4758 4784 4992 5382 5612 5856 6344 6624 7137 7176 7488 7808 8418 8784 8832 9516 9568 10764 11224 11712 12627 12688 13248 14274 14352 14976 16836 17568 18239 19032 19136 21528 22448 23424 25254 25376 26496 28548 28704 33672 35136 36478 38064 38272 43056 44896 50508 50752 54717 57096 57408 67344 70272 72956 76128 86112 89792 101016 101504 109434 114192 114816 134688 145912 152256 164151 172224 179584 202032 218868 228384 269376 291824 304512 328302 344448 404064 437736 456768 538752 583648 656604 808128 875472 913536 1167296 1313208 1616256 1750944 2334592 2626416 3501888 5252832 7003776 10505664 21011328
• Sum of all divisors σ(n): 69058080
• Sum of proper divisors (its aliquot sum) s(n): 48046752
• 21011328 is an abundant number, because the sum of its proper divisors (48046752) is greater than itself. Its abundance is 27035424

Bases of 21011328

• Binary: 1010000001001101110000000₂
• Hexadecimal: 0x1409B80
• Base-36: CICG0

Squares and roots of 21011328

• 21011328 squared (21011328²) is 441475904323584
• 21011328 cubed (21011328³) is 9275995029839441559552
• The square root of 21011328 is 4583.8115144495
• The cube root of 21011328 is 275.9420168049

Scales and comparisons

• 21,011,328 seconds is equal to 34 weeks, 5 days, 4 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,011,328 would take you about eighteen hours!

  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 21011328 cubic inches would be around 23 feet tall.

Recreational maths with 21011328

• 21011328 backwards is 82311012
• 21011328 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21011328's digits is 18
• More coming soon!