640914228

Names of 640914228

• Cardinal: 640914228 can be written as Six hundred forty million, nine hundred fourteen thousand, two hundred twenty-eight.

Scientific notation

• Scientific notation: 6.40914228 × 10⁸

Factors of 640914228

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3946

Divisors of 640914228

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 9 12 18 23 27 36 46 54 67 69 92 108 134 138 201 207 268 276 402 414 603 621 804 828 1206 1242 1541 1809 2412 2484 3082 3618 3851 4623 6164 7236 7702 9246 11553 13869 15404 18492 23106 27738 34659 41607 46212 55476 69318 83214 88573 103977 138636 166428 177146 207954 258017 265719 354292 415908 516034 531438 774051 797157 1032068 1062876 1548102 1594314 2322153 2391471 3096204 3188628 4644306 4782942 5934391 6966459 9288612 9565884 11868782 13932918 17803173 23737564 27865836 35606346 53409519 71212692 106819038 160228557 213638076 320457114 640914228
• Sum of all divisors σ(n): 1760209920
• Sum of proper divisors (its aliquot sum) s(n): 1119295692
• 640914228 is an abundant number, because the sum of its proper divisors (1119295692) is greater than itself. Its abundance is 478381464

Bases of 640914228

• Binary: 100110001100111001001100110100₂
• Hexadecimal: 0x26339334
• Base-36: ALL0L0

Squares and roots of 640914228

• 640914228 squared (640914228²) is 410771047652835984
• 640914228 cubed (640914228³) is 263269008891168586695980352
• The square root of 640914228 is 25316.2838505181
• The cube root of 640914228 is 862.1840233867

Scales and comparisons

• 640,914,228 seconds is equal to 20 years, 19 weeks, 4 days, 23 hours, 43 minutes, 48 seconds.
• To count from 1 to 640,914,228 would take you about thirty 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 640914228 cubic inches would be around 71.8 feet tall.

Recreational maths with 640914228

• 640914228 backwards is 822419046
• 640914228 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 640914228's digits is 36
• More coming soon!