30721818225

Names of 30721818225

• Cardinal: 30721818225 can be written as Thirty billion, seven hundred twenty-one million, eight hundred eighteen thousand, two hundred twenty-five.

Scientific notation

• Scientific notation: 3.0721818225 × 10¹⁰

Factors of 30721818225

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 306

Divisors of 30721818225

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 5 7 15 21 25 35 73 75 79 105 139 175 219 237 365 395 417 511 525 553 695 973 1095 1185 1533 1659 1825 1975 2085 2555 2765 2919 3475 4865 5329 5475 5767 5925 7665 8295 10147 10425 10981 12775 13825 14595 15987 17301 24325 26645 28835 30441 32943 37303 38325 40369 41475 50735 54905 71029 72975 76867 79935 86505 111909 121107 133225 144175 152205 164715 186515 201845 213087 230601 253675 274525 355145 384335 399675 420991 432525 559545 605535 740731 761025 801613 823575 932575 1009225 1065435 1153005 1262973 1775725 1921675 2104955 2222193 2404839 2797725 2946937 3027675 3703655 4008065 5185117 5327175 5611291 5765025 6314865 8840811 10524775 11110965 12024195 14734685 15555351 16833873 18518275 20040325 25925585 28056455 31574325 44204055 55554825 58517749 60120975 73673425 77776755 84169365 129627925 140282275 175553247 221020275 292588745 388883775 409624243 420846825 877766235 1228872729 1462943725 2048121215 4388831175 6144363645 10240606075 30721818225
• Sum of all divisors σ(n): 60029491200
• Sum of proper divisors (its aliquot sum) s(n): 29307672975
• 30721818225 is a deficient number, because the sum of its proper divisors (29307672975) is less than itself. Its deficiency is 1414145250

Bases of 30721818225

• Binary: 11100100111001010011011111001110001₂
• Hexadecimal: 0x72729BE71
• Base-36: E42Z6NL

Squares and roots of 30721818225

• 30721818225 squared (30721818225²) is 943830115049942150625
• 30721818225 cubed (30721818225³) is 28996177229845159548266820140625
• The square root of 30721818225 is 175276.4052147351
• The cube root of 30721818225 is 3131.9559008673

Scales and comparisons

• 30,721,818,225 seconds is equal to 976 years, 44 weeks, 4 days, 14 hours, 23 minutes, 45 seconds.
• To count from 1 to 30,721,818,225 would take you about one thousand, nine hundred fifty-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 30721818225 cubic inches would be around 261 feet tall.

Recreational maths with 30721818225

• 30721818225 backwards is 52281812703
• The number of decimal digits it has is: 11
• The sum of 30721818225's digits is 39
• More coming soon!