### About the Number 481 (four hundred eighty-one)

481 was the smallest 37-smooth number didn't have a nBAB on 21 September 2016.

```MathBabbler Number Analyst (MBNA) output:
=========================================
481 is natural, counting, whole, integer
481 is odd (not even)
481 is not extremely odd
481 proper divisors are: 1,13,37,
481 has 3 proper divisors
481 is deficient (sum of divisors is 51; ratio: 0.106029)
481 is unhappy
481 is a Squarefree Number
481 is Harshad (Niven) number
481 is composite (not prime)
481 has the prime factors: 13*37 (sum=50)
481 is semiprime (biprime or 2-almost prime)
481 is a 37-smooth number
481 is a Moran Number
481 is Arithmetic (A003601)
481 in octal is 0741
481 in hexadecimal is 0x1e1
481 in binary is 111100001 (is odious)
481 nearest square numbers: -40...3 (441...484 )
sqrt(481) = 21.9317
ln(481) = 6.17587
log(481) = 2.68215
481! is 9.04427e+1082
481 is 153.107 Pi years
481 is 24 score and 1 year
481 written as a Roman numeral is CDLXXXI
481 is 241^2 - 240^2 and 241 + 240 = 481
481 is a multiple of 1 & it contains a 1 (A011531)
______
481 reciprocal is 0.002079
remainders:
1,10,100,38,380,433,1
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 21 September 2016 