19978478942720

Names of 19978478942720

• Cardinal: 19978478942720 can be written as Nineteen trillion, nine hundred seventy-eight billion, four hundred seventy-eight million, nine hundred forty-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.997847894272 × 10¹³

Factors of 19978478942720

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 7804093344

Divisors of 19978478942720

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1280 2560 7804093337 15608186674 31216373348 39020466685 62432746696 78040933370 124865493392 156081866740 249730986784 312163733480 499461973568 624327466960 998923947136 1248654933920 1997847894272 2497309867840 3995695788544 4994619735680 9989239471360 19978478942720
• Sum of all divisors σ(n): 47901524908644
• Sum of proper divisors (its aliquot sum) s(n): 27923045965924
• 19978478942720 is an abundant number, because the sum of its proper divisors (27923045965924) is greater than itself. Its abundance is 7944567023204

Bases of 19978478942720

• Binary: 100100010101110011010001000111111101000000000₂
• Hexadecimal: 0x122B9A23FA00
• Base-36: 72XZIJ7CW

Squares and roots of 19978478942720

• 19978478942720 squared (19978478942720²) is 399139620864706449040998400
• 19978478942720 cubed (19978478942720³) is 7974202510650782150199771272365211648000
• The square root of 19978478942720 is 4469729.1800197471
• The cube root of 19978478942720 is 27134.4364821403

Scales and comparisons

• 19,978,478,942,720 seconds is equal to 635,253 years, 43 weeks, 2 days, 4 hours, 5 minutes, 20 seconds.
• To count from 1 to 19,978,478,942,720 would take you about one million, five hundred eighty-eight thousand, one hundred thirty-four 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 19978478942720 cubic inches would be around 2261.2 feet tall.

Recreational maths with 19978478942720

• 19978478942720 backwards is 02724987487991
• The number of decimal digits it has is: 14
• The sum of 19978478942720's digits is 77
• More coming soon!