28128320

Names of 28128320

• Cardinal: 28128320 can be written as Twenty-eight million, one hundred twenty-eight thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.812832 × 10⁷

Factors of 28128320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 210

Divisors of 28128320

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 40 44 55 61 64 80 88 110 122 131 160 176 220 244 262 305 320 352 440 488 524 610 655 671 704 880 976 1048 1220 1310 1342 1441 1760 1952 2096 2440 2620 2684 2882 3355 3520 3904 4192 4880 5240 5368 5764 6710 7205 7991 8384 9760 10480 10736 11528 13420 14410 15982 19520 20960 21472 23056 26840 28820 31964 39955 41920 42944 46112 53680 57640 63928 79910 87901 92224 107360 115280 127856 159820 175802 214720 230560 255712 319640 351604 439505 461120 511424 639280 703208 879010 1278560 1406416 1758020 2557120 2812832 3516040 5625664 7032080 14064160 28128320
• Sum of all divisors σ(n): 74834496
• Sum of proper divisors (its aliquot sum) s(n): 46706176
• 28128320 is an abundant number, because the sum of its proper divisors (46706176) is greater than itself. Its abundance is 18577856

Bases of 28128320

• Binary: 1101011010011010001000000₂
• Hexadecimal: 0x1AD3440
• Base-36: GQVY8

Squares and roots of 28128320

• 28128320 squared (28128320²) is 791202386022400
• 28128320 cubed (28128320³) is 22255193898801594368000
• The square root of 28128320 is 5303.6138622641
• The cube root of 28128320 is 304.1220654771

Scales and comparisons

• 28,128,320 seconds is equal to 46 weeks, 3 days, 13 hours, 25 minutes, 20 seconds.
• To count from 1 to 28,128,320 would take you about seventeen 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 28128320 cubic inches would be around 25.3 feet tall.

Recreational maths with 28128320

• 28128320 backwards is 02382182
• The number of decimal digits it has is: 8
• The sum of 28128320's digits is 26
• More coming soon!