66389120

Names of 66389120

• Cardinal: 66389120 can be written as Sixty-six million, three hundred eighty-nine thousand, one hundred twenty.

Scientific notation

• Scientific notation: 6.638912 × 10⁷

Factors of 66389120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 116

Divisors of 66389120

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 49 56 58 64 70 73 80 98 112 116 128 140 145 146 160 196 203 224 232 245 280 290 292 320 365 392 406 448 464 490 511 560 580 584 640 730 784 812 896 928 980 1015 1022 1120 1160 1168 1421 1460 1568 1624 1856 1960 2030 2044 2117 2240 2320 2336 2555 2842 2920 3136 3248 3577 3712 3920 4060 4088 4234 4480 4640 4672 5110 5684 5840 6272 6496 7105 7154 7840 8120 8176 8468 9280 9344 10220 10585 11368 11680 12992 14210 14308 14819 15680 16240 16352 16936 17885 18560 20440 21170 22736 23360 25984 28420 28616 29638 31360 32480 32704 33872 35770 40880 42340 45472 46720 56840 57232 59276 64960 65408 67744 71540 74095 81760 84680 90944 103733 113680 114464 118552 129920 135488 143080 148190 163520 169360 181888 207466 227360 228928 237104 270976 286160 296380 327040 338720 414932 454720 457856 474208 518665 572320 592760 677440 829864 909440 948416 1037330 1144640 1185520 1354880 1659728 1896832 2074660 2289280 2371040 3319456 4149320 4742080 6638912 8298640 9484160 13277824 16597280 33194560 66389120
• Sum of all divisors σ(n): 193606200
• Sum of proper divisors (its aliquot sum) s(n): 127217080
• 66389120 is an abundant number, because the sum of its proper divisors (127217080) is greater than itself. Its abundance is 60827960

Bases of 66389120

• Binary: 11111101010000010010000000₂
• Hexadecimal: 0x3F50480
• Base-36: 13IY68

Squares and roots of 66389120

• 66389120 squared (66389120²) is 4407515254374400
• 66389120 cubed (66389120³) is 292611059124492566528000
• The square root of 66389120 is 8147.9518898923
• The cube root of 66389120 is 404.9166520553

Scales and comparisons

• 66,389,120 seconds is equal to 2 years, 5 weeks, 5 days, 9 hours, 25 minutes, 20 seconds.
• To count from 1 to 66,389,120 would take you about 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 66389120 cubic inches would be around 33.7 feet tall.

Recreational maths with 66389120

• 66389120 backwards is 02198366
• 66389120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 66389120's digits is 35
• More coming soon!