18529940

Names of 18529940

• Cardinal: 18529940 can be written as Eighteen million, five hundred twenty-nine thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.852994 × 10⁷

Factors of 18529940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 81

Divisors of 18529940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 11 13 19 20 22 26 31 38 44 52 55 62 65 76 95 110 121 124 130 143 155 190 209 220 242 247 260 286 310 341 380 403 418 484 494 572 589 605 620 682 715 806 836 988 1045 1178 1210 1235 1364 1430 1573 1612 1705 2015 2090 2299 2356 2420 2470 2717 2860 2945 3146 3410 3751 4030 4180 4433 4598 4940 5434 5890 6292 6479 6820 7502 7657 7865 8060 8866 9196 10868 11495 11780 12958 13585 15004 15314 15730 17732 18755 22165 22990 25916 27170 29887 30628 31460 32395 37510 38285 44330 45980 48763 54340 59774 64790 71269 75020 76570 84227 88660 97526 119548 129580 142538 149435 153140 168454 195052 243815 285076 298870 336908 356345 421135 487630 597740 712690 842270 926497 975260 1425380 1684540 1852994 3705988 4632485 9264970 18529940
• Sum of all divisors σ(n): 50050560
• Sum of proper divisors (its aliquot sum) s(n): 31520620
• 18529940 is an abundant number, because the sum of its proper divisors (31520620) is greater than itself. Its abundance is 12990680

Bases of 18529940

• Binary: 1000110101011111010010100₂
• Hexadecimal: 0x11ABE94
• Base-36: B15SK

Squares and roots of 18529940

• 18529940 squared (18529940²) is 343358676403600
• 18529940 cubed (18529940³) is 6362415672238123784000
• The square root of 18529940 is 4304.6416807907
• The cube root of 18529940 is 264.6212222315

Scales and comparisons

• 18,529,940 seconds is equal to 30 weeks, 4 days, 11 hours, 12 minutes, 20 seconds.
• To count from 1 to 18,529,940 would take you about forty-five weeks!

  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 18529940 cubic inches would be around 22.1 feet tall.

Recreational maths with 18529940

• 18529940 backwards is 04992581
• 18529940 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18529940's digits is 38
• More coming soon!