20928949390

Names of 20928949390

• Cardinal: 20928949390 can be written as Twenty billion, nine hundred twenty-eight million, nine hundred forty-nine thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.092894939 × 10¹⁰

Factors of 20928949390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 241

Divisors of 20928949390

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 5 10 17 29 34 58 79 85 109 145 158 170 218 289 290 395 493 545 578 790 841 986 1090 1343 1445 1682 1853 2291 2465 2686 2890 3161 3706 4205 4582 4930 6322 6715 8381 8410 8611 9265 11455 13430 14297 15805 16762 17222 18530 22831 22910 28594 31501 31610 38947 41905 43055 45662 53737 63002 66439 71485 77894 83810 86110 91669 107474 114155 132878 142970 146387 157505 183338 194735 228310 243049 249719 268685 292774 315010 332195 389470 458345 486098 499438 537370 662099 664390 731935 913529 916690 1129463 1215245 1248595 1324198 1463870 1558373 1827058 2258926 2430490 2488579 2497190 3116746 3310495 4245223 4567645 4977158 5647315 6620990 7241851 7791865 8490446 9135290 11294630 12442895 14483702 15583730 19200871 21226115 24885790 26492341 36209255 38401742 42452230 52984682 72168791 72418510 96004355 123111467 132461705 144337582 192008710 246222934 264923410 360843955 615557335 721687910 1231114670 2092894939 4185789878 10464474695 20928949390
• Sum of all divisors σ(n): 42355684800
• Sum of proper divisors (its aliquot sum) s(n): 21426735410
• 20928949390 is an abundant number, because the sum of its proper divisors (21426735410) is greater than itself. Its abundance is 497786020

Bases of 20928949390

• Binary: 10011011111011101100110110010001110₂
• Hexadecimal: 0x4DF766C8E
• Base-36: 9M4K0PA

Squares and roots of 20928949390

• 20928949390 squared (20928949390²) is 438020922569181372100
• 20928949390 cubed (20928949390³) is 9167317720211505710411658019000
• The square root of 20928949390 is 144668.4118596731
• The cube root of 20928949390 is 2755.8091805921

Scales and comparisons

• 20,928,949,390 seconds is equal to 665 years, 24 weeks, 5 days, 5 hours, 3 minutes, 10 seconds.
• To count from 1 to 20,928,949,390 would take you about one thousand, three hundred thirty 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 20928949390 cubic inches would be around 229.7 feet tall.

Recreational maths with 20928949390

• 20928949390 backwards is 09394982902
• The number of decimal digits it has is: 11
• The sum of 20928949390's digits is 55
• More coming soon!