30997440

Names of 30997440

• Cardinal: 30997440 can be written as Thirty million, nine hundred ninety-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 3.099744 × 10⁷

Factors of 30997440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 286

Divisors of 30997440

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 47 48 60 64 72 80 90 94 96 120 141 144 160 180 188 192 229 235 240 282 288 320 360 376 423 458 470 480 564 576 687 705 720 752 846 916 940 960 1128 1145 1374 1410 1440 1504 1692 1832 1880 2061 2115 2256 2290 2748 2820 2880 3008 3384 3435 3664 3760 4122 4230 4512 4580 5496 5640 6768 6870 7328 7520 8244 8460 9024 9160 10305 10763 10992 11280 13536 13740 14656 15040 16488 16920 18320 20610 21526 21984 22560 27072 27480 32289 32976 33840 36640 41220 43052 43968 45120 53815 54960 64578 65952 67680 73280 82440 86104 96867 107630 109920 129156 131904 135360 161445 164880 172208 193734 215260 219840 258312 322890 329760 344416 387468 430520 484335 516624 645780 659520 688832 774936 861040 968670 1033248 1291560 1549872 1722080 1937340 2066496 2583120 3099744 3444160 3874680 5166240 6199488 7749360 10332480 15498720 30997440
• Sum of all divisors σ(n): 109362240
• Sum of proper divisors (its aliquot sum) s(n): 78364800
• 30997440 is an abundant number, because the sum of its proper divisors (78364800) is greater than itself. Its abundance is 47367360

Bases of 30997440

• Binary: 1110110001111101111000000₂
• Hexadecimal: 0x1D8FBC0
• Base-36: IGDS0

Squares and roots of 30997440

• 30997440 squared (30997440²) is 960841286553600
• 30997440 cubed (30997440³) is 29783620129468022784000
• The square root of 30997440 is 5567.5344632971
• The cube root of 30997440 is 314.1294177597

Scales and comparisons

• 30,997,440 seconds is equal to 51 weeks, 1 day, 18 hours, 24 minutes.
• To count from 1 to 30,997,440 would take you about twenty-four 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 30997440 cubic inches would be around 26.2 feet tall.

Recreational maths with 30997440

• 30997440 backwards is 04479903
• 30997440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30997440's digits is 36
• More coming soon!