21485542

Names of 21485542

• Cardinal: 21485542 can be written as Twenty-one million, four hundred eighty-five thousand, five hundred forty-two.

Scientific notation

• Scientific notation: 2.1485542 × 10⁷

Factors of 21485542

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 149

Divisors of 21485542

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 13 19 23 26 31 38 46 61 62 122 247 299 403 437 494 589 598 713 793 806 874 1159 1178 1403 1426 1586 1891 2318 2806 3782 5681 7657 9269 11362 13547 15067 15314 18239 18538 24583 26657 27094 30134 35929 36478 43493 49166 53314 71858 86986 176111 346541 352222 467077 565409 693082 826367 934154 1130818 1652734 10742771 21485542
• Sum of all divisors σ(n): 39997440
• Sum of proper divisors (its aliquot sum) s(n): 18511898
• 21485542 is a deficient number, because the sum of its proper divisors (18511898) is less than itself. Its deficiency is 2973644

Bases of 21485542

• Binary: 1010001111101011111100110₂
• Hexadecimal: 0x147D7E6
• Base-36: CSICM

Squares and roots of 21485542

• 21485542 squared (21485542²) is 461628515033764
• 21485542 cubed (21485542³) is 9918338848155567840088
• The square root of 21485542 is 4635.2499393237
• The cube root of 21485542 is 278.0025447035

Scales and comparisons

• 21,485,542 seconds is equal to 35 weeks, 3 days, 16 hours, 12 minutes, 22 seconds.
• To count from 1 to 21,485,542 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 21485542 cubic inches would be around 23.2 feet tall.

Recreational maths with 21485542

• 21485542 backwards is 24558412
• 21485542 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21485542's digits is 31
• More coming soon!