6438739680

Names of 6438739680

• Cardinal: 6438739680 can be written as Six billion, four hundred thirty-eight million, seven hundred thirty-nine thousand, six hundred eighty.

Scientific notation

• Scientific notation: 6.43873968 × 10⁹

Factors of 6438739680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 48120

Divisors of 6438739680

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 32 36 40 45 48 54 60 62 72 80 90 93 96 108 120 124 135 144 155 160 180 186 216 240 248 270 279 288 310 360 372 432 465 480 496 540 558 620 720 744 837 864 930 992 1080 1116 1240 1395 1440 1488 1674 1860 2160 2232 2480 2790 2976 3348 3720 4185 4320 4464 4960 5580 6696 7440 8370 8928 11160 13392 14880 16740 22320 26784 33480 44640 48079 66960 96158 133920 144237 192316 240395 288474 384632 432711 480790 576948 721185 769264 865422 961580 1153896 1298133 1442370 1490449 1538528 1730844 1923160 2163555 2307792 2596266 2884740 2980898 3461688 3846320 4327110 4471347 4615584 5192532 5769480 5961796 6490665 6923376 7452245 7692640 8654220 8942694 10385064 11538960 11923592 12981330 13414041 13846752 14904490 17308440 17885388 20770128 22356735 23077920 23847184 25962660 26828082 29808980 34616880 35770776 40242123 41540256 44713470 47694368 51925320 53656164 59617960 67070205 69233760 71541552 80484246 89426940 103850640 107312328 119235920 134140410 143083104 160968492 178853880 201210615 207701280 214624656 238471840 268280820 321936984 357707760 402421230 429249312 536561640 643873968 715415520 804842460 1073123280 1287747936 1609684920 2146246560 3219369840 6438739680
• Sum of all divisors σ(n): 23263027200
• Sum of proper divisors (its aliquot sum) s(n): 16824287520
• 6438739680 is an abundant number, because the sum of its proper divisors (16824287520) is greater than itself. Its abundance is 10385547840

Bases of 6438739680

• Binary: 101111111110001110101111011100000₂
• Hexadecimal: 0x17FC75EE0
• Base-36: 2YHGJC0

Squares and roots of 6438739680

• 6438739680 squared (6438739680²) is 41457368666806502400
• 6438739680 cubed (6438739680³) is 266933204663355725884895232000
• The square root of 6438739680 is 80241.7577075677
• The cube root of 6438739680 is 1860.3741182937

Scales and comparisons

• 6,438,739,680 seconds is equal to 204 years, 38 weeks, 10 hours, 48 minutes.
• To count from 1 to 6,438,739,680 would take you about four hundred nine 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 6438739680 cubic inches would be around 155 feet tall.

Recreational maths with 6438739680

• 6438739680 backwards is 0869378346
• 6438739680 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6438739680's digits is 54
• More coming soon!