20749040

Names of 20749040

• Cardinal: 20749040 can be written as Twenty million, seven hundred forty-nine thousand and forty.

Scientific notation

• Scientific notation: 2.074904 × 10⁷

Factors of 20749040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 372

Divisors of 20749040

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 52 65 71 80 104 130 142 208 260 281 284 355 520 562 568 710 923 1040 1124 1136 1405 1420 1846 2248 2810 2840 3653 3692 4496 4615 5620 5680 7306 7384 9230 11240 14612 14768 18265 18460 19951 22480 29224 36530 36920 39902 58448 73060 73840 79804 99755 146120 159608 199510 259363 292240 319216 399020 518726 798040 1037452 1296815 1596080 2074904 2593630 4149808 5187260 10374520 20749040
• Sum of all divisors σ(n): 52871616
• Sum of proper divisors (its aliquot sum) s(n): 32122576
• 20749040 is an abundant number, because the sum of its proper divisors (32122576) is greater than itself. Its abundance is 11373536

Bases of 20749040

• Binary: 1001111001001101011110000₂
• Hexadecimal: 0x13C9AF0
• Base-36: CCQ28

Squares and roots of 20749040

• 20749040 squared (20749040²) is 430522660921600
• 20749040 cubed (20749040³) is 8932931912368715264000
• The square root of 20749040 is 4555.1114146637
• The cube root of 20749040 is 274.7889951643

Scales and comparisons

• 20,749,040 seconds is equal to 34 weeks, 2 days, 3 hours, 37 minutes, 20 seconds.
• To count from 1 to 20,749,040 would take you about fifty-one weeks!

  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 20749040 cubic inches would be around 22.9 feet tall.

Recreational maths with 20749040

• 20749040 backwards is 04094702
• 20749040 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20749040's digits is 26
• More coming soon!