21006480

Names of 21006480

• Cardinal: 21006480 can be written as Twenty-one million, six thousand, four hundred eighty.

Scientific notation

• Scientific notation: 2.100648 × 10⁷

Factors of 21006480

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 203

Divisors of 21006480

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 73 80 88 109 110 120 132 146 165 176 218 219 220 240 264 292 327 330 365 436 438 440 528 545 584 654 660 730 803 872 876 880 1090 1095 1168 1199 1308 1320 1460 1606 1635 1744 1752 2180 2190 2398 2409 2616 2640 2920 3212 3270 3504 3597 4015 4360 4380 4796 4818 5232 5840 5995 6424 6540 7194 7957 8030 8720 8760 9592 9636 11990 12045 12848 13080 14388 15914 16060 17520 17985 19184 19272 23871 23980 24090 26160 28776 31828 32120 35970 38544 39785 47742 47960 48180 57552 63656 64240 71940 79570 87527 95484 95920 96360 119355 127312 143880 159140 175054 190968 192720 238710 262581 287760 318280 350108 381936 437635 477420 525162 636560 700216 875270 954840 1050324 1312905 1400432 1750540 1909680 2100648 2625810 3501080 4201296 5251620 7002160 10503240 21006480
• Sum of all divisors σ(n): 72673920
• Sum of proper divisors (its aliquot sum) s(n): 51667440
• 21006480 is an abundant number, because the sum of its proper divisors (51667440) is greater than itself. Its abundance is 30660960

Bases of 21006480

• Binary: 1010000001000100010010000₂
• Hexadecimal: 0x1408890
• Base-36: CI8PC

Squares and roots of 21006480

• 21006480 squared (21006480²) is 441272201990400
• 21006480 cubed (21006480³) is 9269575685667297792000
• The square root of 21006480 is 4583.2826663867
• The cube root of 21006480 is 275.9207922255

Scales and comparisons

• 21,006,480 seconds is equal to 34 weeks, 5 days, 3 hours, 8 minutes.
• To count from 1 to 21,006,480 would take you about sixteen 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 21006480 cubic inches would be around 23 feet tall.

Recreational maths with 21006480

• 21006480 backwards is 08460012
• The number of decimal digits it has is: 8
• The sum of 21006480's digits is 21
• More coming soon!