30142840

Names of 30142840

• Cardinal: 30142840 can be written as Thirty million, one hundred forty-two thousand, eight hundred forty.

Scientific notation

• Scientific notation: 3.014284 × 10⁷

Factors of 30142840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 27

Divisors of 30142840

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 20 26 28 35 40 49 52 56 65 70 91 98 104 130 140 169 182 196 245 260 280 338 343 364 392 455 490 520 637 676 686 728 845 910 980 1183 1274 1352 1372 1690 1715 1820 1960 2197 2366 2548 2744 3185 3380 3430 3640 4394 4459 4732 5096 5915 6370 6760 6860 8281 8788 8918 9464 10985 11830 12740 13720 15379 16562 17576 17836 21970 22295 23660 25480 30758 33124 35672 41405 43940 44590 47320 57967 61516 66248 76895 82810 87880 89180 107653 115934 123032 153790 165620 178360 215306 231868 289835 307580 331240 430612 463736 538265 579670 615160 753571 861224 1076530 1159340 1507142 2153060 2318680 3014284 3767855 4306120 6028568 7535710 15071420 30142840
• Sum of all divisors σ(n): 85680000
• Sum of proper divisors (its aliquot sum) s(n): 55537160
• 30142840 is an abundant number, because the sum of its proper divisors (55537160) is greater than itself. Its abundance is 25394320

Bases of 30142840

• Binary: 1110010111111000101111000₂
• Hexadecimal: 0x1CBF178
• Base-36: HY2D4

Squares and roots of 30142840

• 30142840 squared (30142840²) is 908590803265600
• 30142840 cubed (30142840³) is 27387507208306458304000
• The square root of 30142840 is 5490.2495389555
• The cube root of 30142840 is 311.2156222951

Scales and comparisons

• 30,142,840 seconds is equal to 49 weeks, 5 days, 21 hours, 40 seconds.
• To count from 1 to 30,142,840 would take you about twenty-two 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 30142840 cubic inches would be around 25.9 feet tall.

Recreational maths with 30142840

• 30142840 backwards is 04824103
• The number of decimal digits it has is: 8
• The sum of 30142840's digits is 22
• More coming soon!