12728692440

Names of 12728692440

• Cardinal: 12728692440 can be written as Twelve billion, seven hundred twenty-eight million, six hundred ninety-two thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.272869244 × 10¹⁰

Factors of 12728692440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 14906

Divisors of 12728692440

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 2963 5926 8889 11852 11933 14815 17778 23704 23866 26667 29630 35556 35799 44445 47732 53334 59260 59665 71112 71598 88890 95464 106668 107397 118520 119330 133335 143196 177780 178995 213336 214794 238660 266670 286392 355560 357990 429588 477320 533340 536985 715980 859176 1066680 1073970 1431960 2147940 4295880 35357479 70714958 106072437 141429916 176787395 212144874 282859832 318217311 353574790 424289748 530362185 636434622 707149580 848579496 1060724370 1272869244 1414299160 1591086555 2121448740 2545738488 3182173110 4242897480 6364346220 12728692440
• Sum of all divisors σ(n): 41385679920
• Sum of proper divisors (its aliquot sum) s(n): 28656987480
• 12728692440 is an abundant number, because the sum of its proper divisors (28656987480) is greater than itself. Its abundance is 15928295040

Bases of 12728692440

• Binary: 1011110110101100000110111011011000₂
• Hexadecimal: 0x2F6B06ED8
• Base-36: 5UIC1Y0

Squares and roots of 12728692440

• 12728692440 squared (12728692440²) is 162019611232113153600
• 12728692440 cubed (12728692440³) is 2062297800621937783452878784000
• The square root of 12728692440 is 112821.5069922397
• The cube root of 12728692440 is 2334.8622539171

Scales and comparisons

• 12,728,692,440 seconds is equal to 404 years, 38 weeks, 19 hours, 54 minutes.
• To count from 1 to 12,728,692,440 would take you about eight 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 12728692440 cubic inches would be around 194.6 feet tall.

Recreational maths with 12728692440

• 12728692440 backwards is 04429682721
• 12728692440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12728692440's digits is 45
• More coming soon!