30721152

Names of 30721152

• Cardinal: 30721152 can be written as Thirty million, seven hundred twenty-one thousand, one hundred fifty-two.

Scientific notation

• Scientific notation: 3.0721152 × 10⁷

Factors of 30721152

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1062

Divisors of 30721152

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 42 44 48 56 64 66 77 84 88 96 112 128 132 154 168 176 192 224 231 264 308 336 352 384 448 462 528 616 672 704 896 924 1039 1056 1232 1344 1408 1848 2078 2112 2464 2688 3117 3696 4156 4224 4928 6234 7273 7392 8312 9856 11429 12468 14546 14784 16624 21819 22858 24936 29092 29568 33248 34287 43638 45716 49872 58184 66496 68574 80003 87276 91432 99744 116368 132992 137148 160006 174552 182864 199488 232736 240009 274296 320012 349104 365728 398976 465472 480018 548592 640024 698208 731456 930944 960036 1097184 1280048 1396416 1462912 1920072 2194368 2560096 2792832 3840144 4388736 5120192 7680288 10240384 15360576 30721152
• Sum of all divisors σ(n): 101836800
• Sum of proper divisors (its aliquot sum) s(n): 71115648
• 30721152 is an abundant number, because the sum of its proper divisors (71115648) is greater than itself. Its abundance is 40394496

Bases of 30721152

• Binary: 1110101001100010010000000₂
• Hexadecimal: 0x1D4C480
• Base-36: IAGLC

Squares and roots of 30721152

• 30721152 squared (30721152²) is 943789180207104
• 30721152 cubed (30721152³) is 28994290861097833463808
• The square root of 30721152 is 5542.6665062945
• The cube root of 30721152 is 313.1933261123

Scales and comparisons

• 30,721,152 seconds is equal to 50 weeks, 5 days, 13 hours, 39 minutes, 12 seconds.
• To count from 1 to 30,721,152 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 30721152 cubic inches would be around 26.1 feet tall.

Recreational maths with 30721152

• 30721152 backwards is 25112703
• 30721152 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30721152's digits is 21
• More coming soon!