`follows`

@MathBabbler`on Twitter. MAA is the Mathematical Association of America and they have the MAANumberADay.Blogspot.com blog. The blog posting on 3 March 2010 was for the number`

MAAnow375.MathBabbler Number Analyst (MBNA) output: ========================================= 375 is a natural, whole, integer 375 is odd 375 proper divisors are: 1,3,5,15,25,75,125, 375 is deficient (sum of divisors is 249) 375 is unhappy 375 is a Harshad number 375 is not prime 375 has the prime factors: 3*5*5*5 (sum=18) 375 sum of prime factors is: 18 375 in octal is 0567 375 in hexadecimal is 0x177 375 in binary is 101110111 (is odious) 375 nearest square numbers: -14...25 (361...400 [20]) sqrt(375) = 19.3649 ln(375) = 5.92693 log(375) = 2.57403 375 reciprocal is .00266666666666666666666666666666 375! is 1.2232e+804 375 is 119.366 Pi years 375 is 18 score and 15 years 375 written as a Roman numeral is CCCLXXV 375 = 188^2 - 187^2 and 188 + 187 = 375According to the MAA NumberADay,

375is a5-smooth numberbecause "the product of its [unique] prime factors equals its sum of digits." On 5 March 2010, when this nBAB about the number375was created, the MBNA did not check forsmooth numbers.According to the Wikipedia, "A positive integer is called B-smooth if none of its prime factors are greater than B."

I'm confused and I need to learn more about

smooth numbers...

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 05 March 2010

This work is licensed under a Creative Commons Attribution 3.0 United States License.