309929380

Names of 309929380

• Cardinal: 309929380 can be written as Three hundred nine million, nine hundred twenty-nine thousand, three hundred eighty.

Scientific notation

• Scientific notation: 3.0992938 × 10⁸

Factors of 309929380

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 96

Divisors of 309929380

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 10 17 20 29 34 43 58 68 85 86 116 145 170 172 215 289 290 340 430 493 578 580 731 860 986 1156 1247 1445 1462 1849 1972 2465 2494 2890 2924 3655 3698 4930 4988 5780 6235 7310 7396 8381 9245 9860 12427 12470 14620 16762 18490 21199 24854 24940 31433 33524 36980 41905 42398 49708 53621 62135 62866 83810 84796 105995 107242 124270 125732 157165 167620 211990 214484 248540 268105 314330 360383 423980 534361 536210 628660 720766 911557 1068722 1072420 1441532 1801915 1823114 2137444 2671805 3603830 3646228 4557785 5343610 7207660 9115570 10687220 15496469 18231140 30992938 61985876 77482345 154964690 309929380
• Sum of all divisors σ(n): 732250260
• Sum of proper divisors (its aliquot sum) s(n): 422320880
• 309929380 is an abundant number, because the sum of its proper divisors (422320880) is greater than itself. Its abundance is 112391500

Bases of 309929380

• Binary: 10010011110010010010110100100₂
• Hexadecimal: 0x127925A4
• Base-36: 54IV1G

Squares and roots of 309929380

• 309929380 squared (309929380²) is 96056220587184400
• 309929380 cubed (309929380³) is 29770644891729297037672000
• The square root of 309929380 is 17604.8112741943
• The cube root of 309929380 is 676.7385489357

Scales and comparisons

• 309,929,380 seconds is equal to 9 years, 44 weeks, 3 days, 3 hours, 29 minutes, 40 seconds.
• To count from 1 to 309,929,380 would take you about fourteen 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 309929380 cubic inches would be around 56.4 feet tall.

Recreational maths with 309929380

• 309929380 backwards is 083929903
• 309929380 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 309929380's digits is 43
• More coming soon!