28708120

Names of 28708120

• Cardinal: 28708120 can be written as Twenty-eight million, seven hundred eight thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.870812 × 10⁷

Factors of 28708120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 262

Divisors of 28708120

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 97 98 140 151 194 196 245 280 302 388 392 485 490 604 679 755 776 970 980 1057 1208 1358 1510 1940 1960 2114 2716 3020 3395 3880 4228 4753 5285 5432 6040 6790 7399 8456 9506 10570 13580 14647 14798 19012 21140 23765 27160 29294 29596 36995 38024 42280 47530 58588 59192 73235 73990 95060 102529 117176 146470 147980 190120 205058 292940 295960 410116 512645 585880 717703 820232 1025290 1435406 2050580 2870812 3588515 4101160 5741624 7177030 14354060 28708120
• Sum of all divisors σ(n): 76416480
• Sum of proper divisors (its aliquot sum) s(n): 47708360
• 28708120 is an abundant number, because the sum of its proper divisors (47708360) is greater than itself. Its abundance is 19000240

Bases of 28708120

• Binary: 1101101100000110100011000₂
• Hexadecimal: 0x1B60D18
• Base-36: H3BBS

Squares and roots of 28708120

• 28708120 squared (28708120²) is 824156153934400
• 28708120 cubed (28708120³) is 23659973765887227328000
• The square root of 28708120 is 5357.9958939889
• The cube root of 28708120 is 306.1974603747

Scales and comparisons

• 28,708,120 seconds is equal to 47 weeks, 3 days, 6 hours, 28 minutes, 40 seconds.
• To count from 1 to 28,708,120 would take you about nineteen 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 28708120 cubic inches would be around 25.5 feet tall.

Recreational maths with 28708120

• 28708120 backwards is 02180782
• 28708120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28708120's digits is 28
• More coming soon!