28979200

Names of 28979200

• Cardinal: 28979200 can be written as Twenty-eight million, nine hundred seventy-nine thousand, two hundred.

Scientific notation

• Scientific notation: 2.89792 × 10⁷

Factors of 28979200

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 290

Divisors of 28979200

• Number of divisors d(n): 78
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 283 320 400 512 566 640 800 1024 1132 1280 1415 1600 2048 2264 2560 2830 3200 4096 4528 5120 5660 6400 7075 9056 10240 11320 12800 14150 18112 20480 22640 25600 28300 36224 45280 51200 56600 72448 90560 102400 113200 144896 181120 226400 289792 362240 452800 579584 724480 905600 1159168 1448960 1811200 2897920 3622400 5795840 7244800 14489600 28979200
• Sum of all divisors σ(n): 72113564
• Sum of proper divisors (its aliquot sum) s(n): 43134364
• 28979200 is an abundant number, because the sum of its proper divisors (43134364) is greater than itself. Its abundance is 14155164

Bases of 28979200

• Binary: 1101110100011000000000000₂
• Hexadecimal: 0x1BA3000
• Base-36: H94HS

Squares and roots of 28979200

• 28979200 squared (28979200²) is 839794032640000
• 28979200 cubed (28979200³) is 24336559230681088000000
• The square root of 28979200 is 5383.2332292035
• The cube root of 28979200 is 307.1582119085

Scales and comparisons

• 28,979,200 seconds is equal to 47 weeks, 6 days, 9 hours, 46 minutes, 40 seconds.
• To count from 1 to 28,979,200 would take you about nineteen 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 28979200 cubic inches would be around 25.6 feet tall.

Recreational maths with 28979200

• 28979200 backwards is 00297982
• The number of decimal digits it has is: 8
• The sum of 28979200's digits is 37
• More coming soon!