12857724720

Names of 12857724720

• Cardinal: 12857724720 can be written as Twelve billion, eight hundred fifty-seven million, seven hundred twenty-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.285772472 × 10¹⁰

Factors of 12857724720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 18362

Divisors of 12857724720

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 720 1031 2062 3093 4124 5155 6186 8248 9279 10310 12372 15465 16496 17321 18558 20620 24744 30930 34642 37116 41240 46395 49488 51963 61860 69284 74232 82480 86605 92790 103926 123720 138568 148464 155889 173210 185580 207852 247440 259815 277136 311778 346420 371160 415704 519630 623556 692840 742320 779445 831408 1039260 1247112 1385680 1558890 2078520 2494224 3117780 4157040 6235560 12471120 17857951 35715902 53573853 71431804 89289755 107147706 142863608 160721559 178579510 214295412 267869265 285727216 321443118 357159020 428590824 535738530 642886236 714318040 803607795 857181648 1071477060 1285772472 1428636080 1607215590 2142954120 2571544944 3214431180 4285908240 6428862360 12857724720
• Sum of all divisors σ(n): 43224903072
• Sum of proper divisors (its aliquot sum) s(n): 30367178352
• 12857724720 is an abundant number, because the sum of its proper divisors (30367178352) is greater than itself. Its abundance is 17509453632

Bases of 12857724720

• Binary: 1011111110011000010100111100110000₂
• Hexadecimal: 0x2FE614F30
• Base-36: 5WN5NW0

Squares and roots of 12857724720

• 12857724720 squared (12857724720²) is 165321084975299078400
• 12857724720 cubed (12857724720³) is 2125653001024123549736898048000
• The square root of 12857724720 is 113391.9076477683
• The cube root of 12857724720 is 2342.7253365837

Scales and comparisons

• 12,857,724,720 seconds is equal to 408 years, 43 weeks, 3 days, 6 hours, 12 minutes.
• To count from 1 to 12,857,724,720 would take you about eight hundred seventeen 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 12857724720 cubic inches would be around 195.2 feet tall.

Recreational maths with 12857724720

• 12857724720 backwards is 02742775821
• 12857724720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12857724720's digits is 45
• More coming soon!