64420400

Names of 64420400

• Cardinal: 64420400 can be written as Sixty-four million, four hundred twenty thousand, four hundred.

Scientific notation

• Scientific notation: 6.44204 × 10⁷

Factors of 64420400

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 18

Divisors of 64420400

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 80 88 100 110 121 176 200 220 242 275 400 440 484 550 605 880 968 1100 1210 1331 1936 2200 2420 2662 3025 4400 4840 5324 6050 6655 9680 10648 12100 13310 14641 21296 24200 26620 29282 33275 48400 53240 58564 66550 73205 106480 117128 133100 146410 161051 234256 266200 292820 322102 366025 532400 585640 644204 732050 805255 1171280 1288408 1464100 1610510 2576816 2928200 3221020 4026275 5856400 6442040 8052550 12884080 16105100 32210200 64420400
• Sum of all divisors σ(n): 170246916
• Sum of proper divisors (its aliquot sum) s(n): 105826516
• 64420400 is an abundant number, because the sum of its proper divisors (105826516) is greater than itself. Its abundance is 41406116

Bases of 64420400

• Binary: 11110101101111101000110000₂
• Hexadecimal: 0x3D6FA30
• Base-36: 12CR3K

Squares and roots of 64420400

• 64420400 squared (64420400²) is 4149987936160000
• 64420400 cubed (64420400³) is 267343882842601664000000
• The square root of 64420400 is 8026.2319926601
• The cube root of 64420400 is 400.8739225911

Scales and comparisons

• 64,420,400 seconds is equal to 2 years, 2 weeks, 3 days, 14 hours, 33 minutes, 20 seconds.
• To count from 1 to 64,420,400 would take you about three years!

  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 64420400 cubic inches would be around 33.4 feet tall.

Recreational maths with 64420400

• 64420400 backwards is 00402446
• 64420400 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 64420400's digits is 20
• More coming soon!