About the Number 320 (three hundred twenty)

On 11 February 2015, 320 was the smallest Leyland number that didn't have a nBAB.

MathBabbler Number Analyst (MBNA) output:
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320 is a natural, whole, integer
320 is even
320 proper divisors are: 1,2,4,5,8,10,16,20,32,40,64,80,160,
320 has 13 proper divisors
320 is abundant (sum of divisors is 442; ratio: 1.38125)
320 is happy
320 is not a Squarefree Number: 4,16,64,
320 is Harshad (Niven) number
320 is composite (not prime)
320 has the prime factors: 2*2*2*2*2*2*5 (sum=17)
320 is a Leyland number (2^8+8^2)
320 is the sum of 2 consecutive primes
320 = 157 + 163
320 is not in A038853
320 in octal is 0500
320 in hexadecimal is 0x140
320 in binary is 101000000 (is evil)
320 nearest square numbers: -31...4 (289...324 [18])
sqrt(320) = 17.8885
ln(320) = 5.76832
log(320) = 2.50515
320 reciprocal is .003125
320! is 2.1161e+664
320 is 101.859 Pi years
320 is 16 scoreyears
320 written as a Roman numeral is CCCXX
320 is 81^2 - 79^2 and 2 * (81 + 79)
320 is a multiple of 2 & it contains a 2 (A121022)
320 is a multiple of 20 & it contains a 20 (A121040)
320 is a multiple of 32 & it contains a 32

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 11 February 2015

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