30720000

Names of 30720000

• Cardinal: 30720000 can be written as Thirty million, seven hundred twenty thousand.

Scientific notation

• Scientific notation: 3.072 × 10⁷

Factors of 30720000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 10

Divisors of 30720000

• Number of divisors d(n): 150
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 96 100 120 125 128 150 160 192 200 240 250 256 300 320 375 384 400 480 500 512 600 625 640 750 768 800 960 1000 1024 1200 1250 1280 1500 1536 1600 1875 1920 2000 2048 2400 2500 2560 3000 3072 3200 3750 3840 4000 4096 4800 5000 5120 6000 6144 6400 7500 7680 8000 8192 9600 10000 10240 12000 12288 12800 15000 15360 16000 16384 19200 20000 20480 24000 24576 25600 30000 30720 32000 38400 40000 40960 48000 49152 51200 60000 61440 64000 76800 80000 81920 96000 102400 120000 122880 128000 153600 160000 192000 204800 240000 245760 256000 307200 320000 384000 409600 480000 512000 614400 640000 768000 960000 1024000 1228800 1280000 1536000 1920000 2048000 2560000 3072000 3840000 5120000 6144000 7680000 10240000 15360000 30720000
• Sum of all divisors σ(n): 102364108
• Sum of proper divisors (its aliquot sum) s(n): 71644108
• 30720000 is an abundant number, because the sum of its proper divisors (71644108) is greater than itself. Its abundance is 40924108

Bases of 30720000

• Binary: 1110101001100000000000000₂
• Hexadecimal: 0x1D4C000
• Base-36: IAFPC

Squares and roots of 30720000

• 30720000 squared (30720000²) is 943718400000000
• 30720000 cubed (30720000³) is 28991029248000000000000
• The square root of 30720000 is 5542.5625842205
• The cube root of 30720000 is 313.1894112935

Scales and comparisons

• 30,720,000 seconds is equal to 50 weeks, 5 days, 13 hours, 20 minutes.
• To count from 1 to 30,720,000 would take you about twenty-four 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 30720000 cubic inches would be around 26.1 feet tall.

Recreational maths with 30720000

• 30720000 backwards is 00002703
• 30720000 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30720000's digits is 12
• More coming soon!