30131838

Names of 30131838

• Cardinal: 30131838 can be written as Thirty million, one hundred thirty-one thousand, eight hundred thirty-eight.

Scientific notation

• Scientific notation: 3.0131838 × 10⁷

Factors of 30131838

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 510

Divisors of 30131838

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 6 9 11 18 22 27 33 37 54 66 74 81 99 111 162 198 222 297 333 407 457 594 666 814 891 914 999 1221 1371 1782 1998 2442 2742 2997 3663 4113 5027 5994 7326 8226 10054 10989 12339 15081 16909 21978 24678 30162 32967 33818 37017 45243 50727 65934 74034 90486 101454 135729 152181 185999 271458 304362 371998 407187 456543 557997 814374 913086 1115994 1369629 1673991 2739258 3347982 5021973 10043946 15065919 30131838
• Sum of all divisors σ(n): 75811824
• Sum of proper divisors (its aliquot sum) s(n): 45679986
• 30131838 is an abundant number, because the sum of its proper divisors (45679986) is greater than itself. Its abundance is 15548148

Bases of 30131838

• Binary: 1110010111100011001111110₂
• Hexadecimal: 0x1CBC67E
• Base-36: HXTVI

Squares and roots of 30131838

• 30131838 squared (30131838²) is 907927661258244
• 30131838 cubed (30131838³) is 27357529204752284372472
• The square root of 30131838 is 5489.2474894105
• The cube root of 30131838 is 311.1777535901

Scales and comparisons

• 30,131,838 seconds is equal to 49 weeks, 5 days, 17 hours, 57 minutes, 18 seconds.
• To count from 1 to 30,131,838 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 30131838 cubic inches would be around 25.9 feet tall.

Recreational maths with 30131838

• 30131838 backwards is 83813103
• 30131838 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30131838's digits is 27
• More coming soon!