15420004720

Names of 15420004720

• Cardinal: 15420004720 can be written as Fifteen billion, four hundred twenty million, four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.542000472 × 10¹⁰

Factors of 15420004720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17276

Divisors of 15420004720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 89 127 178 254 356 445 508 635 712 890 1016 1270 1424 1780 2032 2540 3560 5080 7120 10160 11303 17053 22606 34106 45212 56515 68212 85265 90424 113030 136424 170530 180848 226060 272848 341060 452120 682120 904240 1364240 1517717 2165731 3035434 4331462 6070868 7588585 8662924 10828655 12141736 15177170 17325848 21657310 24283472 30354340 34651696 43314620 60708680 86629240 121417360 173258480 192750059 385500118 771000236 963750295 1542000472 1927500590 3084000944 3855001180 7710002360 15420004720
• Sum of all divisors σ(n): 36541946880
• Sum of proper divisors (its aliquot sum) s(n): 21121942160
• 15420004720 is an abundant number, because the sum of its proper divisors (21121942160) is greater than itself. Its abundance is 5701937440

Bases of 15420004720

• Binary: 1110010111000110101001100101110000₂
• Hexadecimal: 0x3971A9970
• Base-36: 730O7SG

Squares and roots of 15420004720

• 15420004720 squared (15420004720²) is 237776545564822278400
• 15420004720 cubed (15420004720³) is 3666515454914854598889154048000
• The square root of 15420004720 is 124177.3116152867
• The cube root of 15420004720 is 2489.0187539179

Scales and comparisons

• 15,420,004,720 seconds is equal to 490 years, 16 weeks, 6 hours, 38 minutes, 40 seconds.
• To count from 1 to 15,420,004,720 would take you about nine hundred eighty 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 15420004720 cubic inches would be around 207.4 feet tall.

Recreational maths with 15420004720

• 15420004720 backwards is 02740002451
• The number of decimal digits it has is: 11
• The sum of 15420004720's digits is 25
• More coming soon!