20749274640

Names of 20749274640

• Cardinal: 20749274640 can be written as Twenty billion, seven hundred forty-nine million, two hundred seventy-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.074927464 × 10¹⁰

Factors of 20749274640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 929668

Divisors of 20749274640

• 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 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 465 496 558 620 720 744 930 1116 1240 1395 1488 1860 2232 2480 2790 3720 4464 5580 7440 11160 22320 929627 1859254 2788881 3718508 4648135 5577762 7437016 8366643 9296270 11155524 13944405 14874032 16733286 18592540 22311048 27888810 28818437 33466572 37185080 41833215 44622096 55777620 57636874 66933144 74370160 83666430 86455311 111555240 115273748 133866288 144092185 167332860 172910622 223110480 230547496 259365933 288184370 334665720 345821244 432276555 461094992 518731866 576368740 669331440 691642488 864553110 1037463732 1152737480 1296829665 1383284976 1729106220 2074927464 2305474960 2593659330 3458212440 4149854928 5187318660 6916424880 10374637320 20749274640
• Sum of all divisors σ(n): 71930896128
• Sum of proper divisors (its aliquot sum) s(n): 51181621488
• 20749274640 is an abundant number, because the sum of its proper divisors (51181621488) is greater than itself. Its abundance is 30432346848

Bases of 20749274640

• Binary: 10011010100110000001100111000010000₂
• Hexadecimal: 0x4D4C0CE10
• Base-36: 9J5KYS0

Squares and roots of 20749274640

• 20749274640 squared (20749274640²) is 430532398086147129600
• 20749274640 cubed (20749274640³) is 8933234969307277171518073344000
• The square root of 20749274640 is 144046.0851255597
• The cube root of 20749274640 is 2747.9003097515

Scales and comparisons

• 20,749,274,640 seconds is equal to 659 years, 39 weeks, 4 days, 15 hours, 24 minutes.
• To count from 1 to 20,749,274,640 would take you about one thousand, three hundred nineteen 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 20749274640 cubic inches would be around 229 feet tall.

Recreational maths with 20749274640

• 20749274640 backwards is 04647294702
• 20749274640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20749274640's digits is 45
• More coming soon!