64428540

Names of 64428540

• Cardinal: 64428540 can be written as Sixty-four million, four hundred twenty-eight thousand, five hundred forty.

Scientific notation

• Scientific notation: 6.442854 × 10⁷

Factors of 64428540

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 166

Divisors of 64428540

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 15 20 22 30 31 33 44 47 55 60 62 66 67 93 94 110 124 132 134 141 155 165 186 188 201 220 235 268 282 310 330 335 341 372 402 465 470 517 564 620 660 670 682 705 737 804 930 940 1005 1023 1034 1340 1364 1410 1457 1474 1551 1705 1860 2010 2046 2068 2077 2211 2585 2820 2914 2948 3102 3149 3410 3685 4020 4092 4154 4371 4422 5115 5170 5828 6204 6231 6298 6820 7285 7370 7755 8308 8742 8844 9447 10230 10340 10385 11055 12462 12596 14570 14740 15510 15745 16027 17484 18894 20460 20770 21855 22110 22847 24924 29140 31020 31155 31490 32054 34639 37788 41540 43710 44220 45694 47235 48081 62310 62980 64108 68541 69278 80135 87420 91388 94470 96162 97619 103917 114235 124620 137082 138556 160270 173195 188940 192324 195238 207834 228470 240405 274164 292857 320540 342705 346390 390476 415668 456940 480810 488095 519585 585714 685410 692780 961620 976190 1039170 1073809 1171428 1370820 1464285 1952380 2078340 2147618 2928570 3221427 4295236 5369045 5857140 6442854 10738090 12885708 16107135 21476180 32214270 64428540
• Sum of all divisors σ(n): 210567168
• Sum of proper divisors (its aliquot sum) s(n): 146138628
• 64428540 is an abundant number, because the sum of its proper divisors (146138628) is greater than itself. Its abundance is 81710088

Bases of 64428540

• Binary: 11110101110001100111111100₂
• Hexadecimal: 0x3D719FC
• Base-36: 12CXDO

Squares and roots of 64428540

• 64428540 squared (64428540²) is 4151036766531600
• 64428540 cubed (64428540³) is 267445238353951851864000
• The square root of 64428540 is 8026.7390639041
• The cube root of 64428540 is 400.8908063541

Scales and comparisons

• 64,428,540 seconds is equal to 2 years, 2 weeks, 3 days, 16 hours, 49 minutes.
• To count from 1 to 64,428,540 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 64428540 cubic inches would be around 33.4 feet tall.

Recreational maths with 64428540

• 64428540 backwards is 04582446
• 64428540 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 64428540's digits is 33
• More coming soon!