21271040

Names of 21271040

• Cardinal: 21271040 can be written as Twenty-one million, two hundred seventy-one thousand and forty.

Scientific notation

• Scientific notation: 2.127104 × 10⁷

Factors of 21271040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1201

Divisors of 21271040

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 512 560 640 896 1120 1187 1280 1792 2240 2374 2560 3584 4480 4748 5935 8309 8960 9496 11870 16618 17920 18992 23740 33236 37984 41545 47480 66472 75968 83090 94960 132944 151936 166180 189920 265888 303872 332360 379840 531776 607744 664720 759680 1063552 1329440 1519360 2127104 2658880 3038720 4254208 5317760 10635520 21271040
• Sum of all divisors σ(n): 58335552
• Sum of proper divisors (its aliquot sum) s(n): 37064512
• 21271040 is an abundant number, because the sum of its proper divisors (37064512) is greater than itself. Its abundance is 15793472

Bases of 21271040

• Binary: 1010001001001001000000000₂
• Hexadecimal: 0x1449200
• Base-36: CNWU8

Squares and roots of 21271040

• 21271040 squared (21271040²) is 452457142681600
• 21271040 cubed (21271040³) is 9624233980266020864000
• The square root of 21271040 is 4612.0537724533
• The cube root of 21271040 is 277.0742979069

Scales and comparisons

• 21,271,040 seconds is equal to 35 weeks, 1 day, 4 hours, 37 minutes, 20 seconds.
• To count from 1 to 21,271,040 would take you about five 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 21271040 cubic inches would be around 23.1 feet tall.

Recreational maths with 21271040

• 21271040 backwards is 04017212
• The number of decimal digits it has is: 8
• The sum of 21271040's digits is 17
• More coming soon!