21121344

Names of 21121344

• Cardinal: 21121344 can be written as Twenty-one million, one hundred twenty-one thousand, three hundred forty-four.

Scientific notation

• Scientific notation: 2.1121344 × 10⁷

Factors of 21121344

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 741

Divisors of 21121344

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 24 27 32 34 36 48 51 54 64 68 72 96 102 108 136 144 153 192 204 216 272 288 306 408 432 459 544 576 612 719 816 864 918 1088 1224 1438 1632 1728 1836 2157 2448 2876 3264 3672 4314 4896 5752 6471 7344 8628 9792 11504 12223 12942 14688 17256 19413 23008 24446 25884 29376 34512 36669 38826 46016 48892 51768 69024 73338 77652 97784 103536 110007 138048 146676 155304 195568 207072 220014 293352 310608 330021 391136 414144 440028 586704 621216 660042 782272 880056 1173408 1242432 1320084 1760112 2346816 2640168 3520224 5280336 7040448 10560672 21121344
• Sum of all divisors σ(n): 65836800
• Sum of proper divisors (its aliquot sum) s(n): 44715456
• 21121344 is an abundant number, because the sum of its proper divisors (44715456) is greater than itself. Its abundance is 23594112

Bases of 21121344

• Binary: 1010000100100100101000000₂
• Hexadecimal: 0x1424940
• Base-36: CKPC0

Squares and roots of 21121344

• 21121344 squared (21121344²) is 446111172366336
• 21121344 cubed (21121344³) is 9422467533792676675584
• The square root of 21121344 is 4595.7963401351
• The cube root of 21121344 is 276.4227924655

Scales and comparisons

• 21,121,344 seconds is equal to 34 weeks, 6 days, 11 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,121,344 would take you about two days!

  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 21121344 cubic inches would be around 23 feet tall.

Recreational maths with 21121344

• 21121344 backwards is 44312112
• 21121344 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21121344's digits is 18
• More coming soon!