1215428790

Names of 1215428790

• Cardinal: 1215428790 can be written as One billion, two hundred fifteen million, four hundred twenty-eight thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 1.21542879 × 10⁹

Factors of 1215428790

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2733

Divisors of 1215428790

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 1103 1597 2206 3194 3309 4791 5515 6618 7985 9582 11030 15970 16545 23955 25369 33090 36731 47910 50738 73462 76107 110193 126845 152214 183655 220386 253690 367310 380535 550965 761070 1101930 1761491 3522982 5284473 8807455 10568946 17614910 26422365 40514293 52844730 81028586 121542879 202571465 243085758 405142930 607714395 1215428790
• Sum of all divisors σ(n): 3048523776
• Sum of proper divisors (its aliquot sum) s(n): 1833094986
• 1215428790 is an abundant number, because the sum of its proper divisors (1833094986) is greater than itself. Its abundance is 617666196

Bases of 1215428790

• Binary: 1001000011100011111100010110110₂
• Hexadecimal: 0x4871F8B6
• Base-36: K3MUUU

Squares and roots of 1215428790

• 1215428790 squared (1215428790²) is 1477267143560864100
• 1215428790 cubed (1215428790³) is 1795513016804937344417439000
• The square root of 1215428790 is 34863.0003011789
• The cube root of 1215428790 is 1067.1935041781

Scales and comparisons

• 1,215,428,790 seconds is equal to 38 years, 33 weeks, 4 days, 11 hours, 6 minutes, 30 seconds.
• To count from 1 to 1,215,428,790 would take you about seventy-seven 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 1215428790 cubic inches would be around 88.9 feet tall.

Recreational maths with 1215428790

• 1215428790 backwards is 0978245121
• The number of decimal digits it has is: 10
• The sum of 1215428790's digits is 39
• More coming soon!