### About the Number 415 (four hundred fifteen)

415 was the smallest number without a nBAB on 2 May 2017.

```MathBabbler Number Analyst (MBNA) output:
=========================================
415 is natural, counting, whole, integer
415 is odd (not even)
415 is not extremely odd
415 proper divisors are: 1,5,83,
415 has 3 proper divisors
415 is deficient (sum of divisors is 89; ratio: 0.214458)
415 is unhappy
415 is a Squarefree Number
415 is composite (not prime)
415 has the prime factors: 5*83 (sum=88)
415 is semiprime (biprime or 2-almost prime)
415 is a 83-smooth number
415 is a lucky number
415 is the sum of 3 distinct cubes (2^3 + 4^3 + 7^3)
415 in octal is 0637
415 in hexadecimal is 0x19f
415 in binary is 110011111 (is odious)
415 nearest square numbers: -15...26 (400...441 )
sqrt(415) = 20.3715
ln(415) = 6.02828
log(415) = 2.61805
415! is 9.24595e+907
415 is 132.099 Pi years
415 is 20 score and 15 years
415 written as a Roman numeral is CDXV
415 is 208^2 - 207^2 and 208 + 207 = 415
415 is a multiple of 1 & it contains a 1 (A011531)
415 is a multiple of 5 & it contains a 5 (A121025)
_________________________________________
415 reciprocal is 0.002409638554216867469879518072289156626506
remainders:
1,10,100,170,40,400,265,160,355,230,225,175,90,70,285,360,280,310,195,290,410,365,330,395,215,75,335,30,300,95,120,370,380,65,235,275,260,110,270,210,25,250,10
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 02 May 2017 