Number

328

328 is a composite number, even, a calendar year.

Deficient Number Odious Number Pernicious Number Recamán's Sequence Year

Historical context — 328 AD

Calendar year

Year 328 (CCCXXVIII) was a leap year starting on Monday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Historical context — 328 BC

Calendar year

Year 328 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Year facts

Year type: Leap year
Divisible by 4 and not by 100; February has 29 days.
Days in year: 366
ISO weeks: 52
Started on: Sunday
January 1, 328
Ended on: Monday
December 31, 328
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 320s
320–329
Century: 4th century
301–400
Millennium: 1st millennium
1–1000
Years ago: 1,698
1698 years before 2026.

In other calendars

Hebrew: 4088 / 4089 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Earth zodiac:Rat
Sexagenary cycle position 25 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 871 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 320 / 321 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 250 / 249 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 13
Digit product: 48
Digital root: 4
Palindrome: No
Bit width: 9 bits
Reversed: 823
Recamán's sequence: a(592) = 328
Square (n²): 107,584
Cube (n³): 35,287,552
Divisor count: 8
σ(n) — sum of divisors: 630
φ(n) — Euler's totient: 160
Sum of prime factors: 47

Primality

Prime factorization: 2 ³ × 41

Nearest primes: 317 (−11) · 331 (+3)

Divisors & multiples

All divisors (8)

1 · 2 · 4 · 8 · 41 · 82 · 164 (half) · 328

Aliquot sum (sum of proper divisors): 302

Factor pairs (a × b = 328)

1 × 328

2 × 164

4 × 82

8 × 41

First multiples

328 · 656 (double) · 984 · 1,312 · 1,640 · 1,968 · 2,296 · 2,624 · 2,952 · 3,280

Sums & aliquot sequence

As a sum of two squares: 2² + 18²

As consecutive integers: 13 + 14 + … + 28

Aliquot sequence: 328 → 302 → 154 → 134 → 70 → 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Representations

In words: three hundred twenty-eight
Ordinal: 328th
Roman numeral: CCCXXVIII
Binary: 101001000
Octal: 510
Hexadecimal: 0x148
Base64: AUg=
One's complement: 65,207 (16-bit)

In other bases

ternary (3) 110011

quaternary (4) 11020

quinary (5) 2303

senary (6) 1304

septenary (7) 646

nonary (9) 404

undecimal (11) 279

duodecimal (12) 234

tridecimal (13) 1c3

tetradecimal (14) 196

pentadecimal (15) 16d

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): τκηʹ
Mayan (base 20): 𝋰·𝋨
Chinese: 三百二十八
Chinese (financial): 參佰貳拾捌

In other modern scripts

Eastern Arabic ٣٢٨ Devanagari ३२८ Bengali ৩২৮ Tamil ௩௨௮ Thai ๓๒๘ Tibetan ༣༢༨ Khmer ៣២៨ Lao ໓໒໘ Burmese ၃၂၈

Digit at this position in famous constants

π — Pi (π): Digit 328 = 0
e — Euler's number (e): Digit 328 = 3
φ — Golden ratio (φ): Digit 328 = 9
√2 — Pythagoras's (√2): Digit 328 = 0
ln 2 — Natural log of 2: Digit 328 = 8
γ — Euler-Mascheroni (γ): Digit 328 = 7

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 328, here are decompositions:

11 + 317 = 328
17 + 311 = 328
47 + 281 = 328
59 + 269 = 328
71 + 257 = 328
89 + 239 = 328
101 + 227 = 328
131 + 197 = 328

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Small Letter N With Caron

U+0148

Lowercase letter (Ll)

UTF-8 encoding: C5 88 (2 bytes).

Lookup U+0148 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000148

RGB(0, 1, 72)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.72.

Address: 0.0.1.72
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.72

Unspecified address (0.0.0.0/8) — "this network" placeholder.