12981389872

Names of 12981389872

• Cardinal: 12981389872 can be written as Twelve billion, nine hundred eighty-one million, three hundred eighty-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.2981389872 × 10¹⁰

Factors of 12981389872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 12692

Divisors of 12981389872

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 11 16 22 31 44 62 88 124 176 191 248 341 382 496 682 764 1364 1528 2101 2728 3056 4202 5456 5921 8404 11842 12457 16808 23684 24914 33616 47368 49828 65131 94736 99656 130262 137027 199312 260524 274054 386167 521048 548108 772334 1042096 1096216 1544668 2192432 2379287 3089336 4247837 4758574 6178672 8495674 9517148 16991348 19034296 26172157 33982696 38068592 52344314 67965392 73757897 104688628 147515794 209377256 295031588 418754512 590063176 811336867 1180126352 1622673734 3245347468 6490694936 12981389872
• Sum of all divisors σ(n): 28473606144
• Sum of proper divisors (its aliquot sum) s(n): 15492216272
• 12981389872 is an abundant number, because the sum of its proper divisors (15492216272) is greater than itself. Its abundance is 2510826400

Bases of 12981389872

• Binary: 1100000101110000000100101000110000₂
• Hexadecimal: 0x305C04A30
• Base-36: 5YOS8J4

Squares and roots of 12981389872

• 12981389872 squared (12981389872²) is 168516483008864176384
• 12981389872 cubed (12981389872³) is 2187578165796329505534879182848
• The square root of 12981389872 is 113935.9024715213
• The cube root of 12981389872 is 2350.2121354901

Scales and comparisons

• 12,981,389,872 seconds is equal to 412 years, 39 weeks, 6 days, 13 hours, 37 minutes, 52 seconds.
• To count from 1 to 12,981,389,872 would take you about eight hundred twenty-five 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 12981389872 cubic inches would be around 195.9 feet tall.

Recreational maths with 12981389872

• 12981389872 backwards is 27898318921
• The number of decimal digits it has is: 11
• The sum of 12981389872's digits is 58
• More coming soon!