384 (number)

← 383 384 385 →
List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	three hundred eighty-four
Ordinal	384th (three hundred eighty-fourth)
Factorization	27 × 3
Greek numeral	ΤΠΔ´
Roman numeral	CCCLXXXIV, ccclxxxiv
Binary	1100000002
Ternary	1120203
Senary	14406
Octal	6008
Duodecimal	28012
Hexadecimal	18016

384 (three hundred [and] eighty-four) is the natural number following 383 and preceding 385. It is an even composite positive integer.

In mathematics

384 is:

• the sum of a twin prime pair (191 + 193).
• the sum of six consecutive primes (53 + 59 + 61 + 67 + 71 + 73).
• the order of the hyperoctahedral group for n = 4
• the double factorial of 8. ^[1]
• an abundant number.
• the third 129-gonal number after 1, 129 and before 766 and 1275.
• a Harshad number in bases 2, 3, 4, 5, 7, 8, 9, 13, 17, and 62 other bases.
• a refactorable number.

Computing

Being a low multiple of a power of two, 384 occurs often in the field of computing. For example, the secure hash function SHA-384 has a 384-bit digest, the screen resolution of the Virtual Boy is 384x224, MP3 Audio layer 1 encoding is 384  kbps, and in 3G phones the WAN implementation of CDMA is up to 384 kbps.

References

1. "Sloane's A000165 : Double factorials". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.