21497400

Names of 21497400

• Cardinal: 21497400 can be written as Twenty-one million, four hundred ninety-seven thousand, four hundred.

Scientific notation

• Scientific notation: 2.14974 × 10⁷

Factors of 21497400

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1337

Divisors of 21497400

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 90 100 108 120 135 150 162 180 200 216 225 270 300 324 360 405 450 540 600 648 675 810 900 1080 1327 1350 1620 1800 2025 2654 2700 3240 3981 4050 5308 5400 6635 7962 8100 10616 11943 13270 15924 16200 19905 23886 26540 31848 33175 35829 39810 47772 53080 59715 66350 71658 79620 95544 99525 107487 119430 132700 143316 159240 179145 199050 214974 238860 265400 286632 298575 358290 398100 429948 477720 537435 597150 716580 796200 859896 895725 1074870 1194300 1433160 1791450 2149740 2388600 2687175 3582900 4299480 5374350 7165800 10748700 21497400
• Sum of all divisors σ(n): 74719920
• Sum of proper divisors (its aliquot sum) s(n): 53222520
• 21497400 is an abundant number, because the sum of its proper divisors (53222520) is greater than itself. Its abundance is 31725120

Bases of 21497400

• Binary: 1010010000000011000111000₂
• Hexadecimal: 0x1480638
• Base-36: CSRI0

Squares and roots of 21497400

• 21497400 squared (21497400²) is 462138206760000
• 21497400 cubed (21497400³) is 9934769886002424000000
• The square root of 21497400 is 4636.5288740609
• The cube root of 21497400 is 278.0536790569

Scales and comparisons

• 21,497,400 seconds is equal to 35 weeks, 3 days, 19 hours, 30 minutes.
• To count from 1 to 21,497,400 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 21497400 cubic inches would be around 23.2 feet tall.

Recreational maths with 21497400

• 21497400 backwards is 00479412
• 21497400 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21497400's digits is 27
• More coming soon!