21036036540

Names of 21036036540

• Cardinal: 21036036540 can be written as Twenty-one billion, thirty-six million, thirty-six thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.103603654 × 10¹⁰

Factors of 21036036540

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1408

Divisors of 21036036540

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 281 562 843 1117 1124 1405 1686 2234 2810 3351 3372 4215 4468 5585 5620 6702 8430 11170 13404 16755 16860 22340 33510 67020 313877 627754 941631 1247689 1255508 1569385 1883262 2495378 3138770 3743067 3766524 4708155 4990756 6238445 6277540 7486134 9416310 12476890 14972268 18715335 18832620 24953780 37430670 74861340 350600609 701201218 1051801827 1402402436 1753003045 2103603654 3506006090 4207207308 5259009135 7012012180 10518018270 21036036540
• Sum of all divisors σ(n): 59163480432
• Sum of proper divisors (its aliquot sum) s(n): 38127443892
• 21036036540 is an abundant number, because the sum of its proper divisors (38127443892) is greater than itself. Its abundance is 17091407352

Bases of 21036036540

• Binary: 10011100101110110000111000110111100₂
• Hexadecimal: 0x4E5D871BC
• Base-36: 9NWB9OC

Squares and roots of 21036036540

• 21036036540 squared (21036036540²) is 442514833312215171600
• 21036036540 cubed (21036036540³) is 9308758203047767578119970264000
• The square root of 21036036540 is 145038.0520415247
• The cube root of 21036036540 is 2760.5014028147

Scales and comparisons

• 21,036,036,540 seconds is equal to 668 years, 45 weeks, 5 days, 15 hours, 29 minutes.
• To count from 1 to 21,036,036,540 would take you about one thousand, three hundred thirty-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 21036036540 cubic inches would be around 230 feet tall.

Recreational maths with 21036036540

• 21036036540 backwards is 04563063012
• 21036036540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21036036540's digits is 30
• More coming soon!