21048487720

Names of 21048487720

• Cardinal: 21048487720 can be written as Twenty-one billion, forty-eight million, four hundred eighty-seven thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.104848772 × 10¹⁰

Factors of 21048487720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4351

Divisors of 21048487720

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 13 20 23 26 40 46 52 65 92 104 115 130 184 230 260 299 457 460 520 598 914 920 1196 1495 1828 2285 2392 2990 3656 3851 4570 5941 5980 7702 9140 10511 11882 11960 15404 18280 19255 21022 23764 29705 30808 38510 42044 47528 50063 52555 59410 77020 84088 88573 100126 105110 118820 136643 154040 177146 200252 210220 237640 250315 273286 354292 400504 420440 442865 500630 546572 683215 708584 885730 1001260 1093144 1151449 1366430 1759907 1771460 2002520 2302898 2732860 3519814 3542920 4605796 5465720 5757245 7039628 8799535 9211592 11514490 14079256 17599070 22878791 23028980 35198140 40477861 45757582 46057960 70396280 80955722 91515164 114393955 161911444 183030328 202389305 228787910 323822888 404778610 457575820 526212193 809557220 915151640 1052424386 1619114440 2104848772 2631060965 4209697544 5262121930 10524243860 21048487720
• Sum of all divisors σ(n): 53349891840
• Sum of proper divisors (its aliquot sum) s(n): 32301404120
• 21048487720 is an abundant number, because the sum of its proper divisors (32301404120) is greater than itself. Its abundance is 11252916400

Bases of 21048487720

• Binary: 10011100110100101100110111100101000₂
• Hexadecimal: 0x4E6966F28
• Base-36: 9O3Q52G

Squares and roots of 21048487720

• 21048487720 squared (21048487720²) is 443038835298990798400
• 21048487720 cubed (21048487720³) is 9325297484273910348515395648000
• The square root of 21048487720 is 145080.9695308107
• The cube root of 21048487720 is 2761.0459401305

Scales and comparisons

• 21,048,487,720 seconds is equal to 669 years, 14 weeks, 2 days, 18 hours, 8 minutes, 40 seconds.
• To count from 1 to 21,048,487,720 would take you about one thousand, three hundred thirty-eight 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 21048487720 cubic inches would be around 230.1 feet tall.

Recreational maths with 21048487720

• 21048487720 backwards is 02778484012
• The number of decimal digits it has is: 11
• The sum of 21048487720's digits is 43
• More coming soon!