21058240

Names of 21058240

• Cardinal: 21058240 can be written as Twenty-one million, fifty-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.105824 × 10⁷

Factors of 21058240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 110

Divisors of 21058240

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 40 49 56 64 68 70 79 80 85 98 112 119 136 140 158 160 170 196 224 238 245 272 280 316 320 340 392 395 448 476 490 544 553 560 595 632 680 784 790 833 952 980 1088 1106 1120 1190 1264 1343 1360 1568 1580 1666 1904 1960 2212 2240 2380 2528 2686 2720 2765 3136 3160 3332 3808 3871 3920 4165 4424 4760 5056 5372 5440 5530 6320 6664 6715 7616 7742 7840 8330 8848 9401 9520 10744 11060 12640 13328 13430 15484 15680 16660 17696 18802 19040 19355 21488 22120 25280 26656 26860 30968 33320 35392 37604 38080 38710 42976 44240 47005 53312 53720 61936 65807 66640 75208 77420 85952 88480 94010 107440 123872 131614 133280 150416 154840 176960 188020 214880 247744 263228 266560 300832 309680 329035 376040 429760 526456 601664 619360 658070 752080 1052912 1238720 1316140 1504160 2105824 2632280 3008320 4211648 5264560 10529120 21058240
• Sum of all divisors σ(n): 62544960
• Sum of proper divisors (its aliquot sum) s(n): 41486720
• 21058240 is an abundant number, because the sum of its proper divisors (41486720) is greater than itself. Its abundance is 20428480

Bases of 21058240

• Binary: 1010000010101001011000000₂
• Hexadecimal: 0x14152C0
• Base-36: CJCN4

Squares and roots of 21058240

• 21058240 squared (21058240²) is 443449471897600
• 21058240 cubed (21058240³) is 9338265407092916224000
• The square root of 21058240 is 4588.9258002281
• The cube root of 21058240 is 276.1472294365

Scales and comparisons

• 21,058,240 seconds is equal to 34 weeks, 5 days, 17 hours, 30 minutes, 40 seconds.
• To count from 1 to 21,058,240 would take you about fourteen 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 21058240 cubic inches would be around 23 feet tall.

Recreational maths with 21058240

• 21058240 backwards is 04285012
• The number of decimal digits it has is: 8
• The sum of 21058240's digits is 22
• More coming soon!