12985280

Names of 12985280

• Cardinal: 12985280 can be written as Twelve million, nine hundred eighty-five thousand, two hundred eighty.

Scientific notation

• Scientific notation: 1.298528 × 10⁷

Factors of 12985280

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 73

Divisors of 12985280

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 17 20 22 28 31 32 34 35 40 44 55 56 62 64 68 70 77 80 85 88 110 112 119 124 136 140 154 155 160 170 176 187 217 220 224 238 248 272 280 308 310 320 340 341 352 374 385 434 440 448 476 496 527 544 560 595 616 620 680 682 704 748 770 868 880 935 952 992 1054 1085 1088 1120 1190 1232 1240 1309 1360 1364 1496 1540 1705 1736 1760 1870 1904 1984 2108 2170 2240 2380 2387 2464 2480 2618 2635 2720 2728 2992 3080 3410 3472 3520 3689 3740 3808 4216 4340 4760 4774 4928 4960 5236 5270 5440 5456 5797 5984 6160 6545 6820 6944 7378 7480 7616 8432 8680 9520 9548 9920 10472 10540 10912 11594 11935 11968 12320 13090 13640 13888 14756 14960 16864 17360 18445 19040 19096 20944 21080 21824 23188 23870 24640 26180 27280 28985 29512 29920 33728 34720 36890 38080 38192 40579 41888 42160 46376 47740 52360 54560 57970 59024 59840 69440 73780 76384 81158 83776 84320 92752 95480 104720 109120 115940 118048 147560 152768 162316 168640 185504 190960 202895 209440 231880 236096 295120 324632 371008 381920 405790 418880 463760 590240 649264 763840 811580 927520 1180480 1298528 1623160 1855040 2597056 3246320 6492640 12985280
• Sum of all divisors σ(n): 42135552
• Sum of proper divisors (its aliquot sum) s(n): 29150272
• 12985280 is an abundant number, because the sum of its proper divisors (29150272) is greater than itself. Its abundance is 16164992

Bases of 12985280

• Binary: 110001100010001111000000₂
• Hexadecimal: 0xC623C0
• Base-36: 7QBI8

Squares and roots of 12985280

• 12985280 squared (12985280²) is 168617496678400
• 12985280 cubed (12985280³) is 2189545407268093952000
• The square root of 12985280 is 3603.5094005705
• The cube root of 12985280 is 235.0446874423

Scales and comparisons

• 12,985,280 seconds is equal to 21 weeks, 3 days, 7 hours, 1 minute, 20 seconds.
• To count from 1 to 12,985,280 would take you about thirty-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 12985280 cubic inches would be around 19.6 feet tall.

Recreational maths with 12985280

• 12985280 backwards is 08258921
• 12985280 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 12985280's digits is 35
• More coming soon!