Number

276

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

276 (two hundred seventy-six) is an even 3-digit number. It is a composite number with 12 divisors, and factors as 2² × 3 × 23. Its proper divisors sum to 396, more than the number itself, making it an abundant number. It is the 23rd triangular number. Written other ways, in Roman numerals it is CCLXXVI and in binary, 100010100.

Abundant Number Arithmetic Number Cube-Free Hexagonal Odious Number Pernicious Number Practical Number Recamán's Sequence Refactorable Number Semiperfect Number Triangular Year

Interestingness

★ ★ ★ ★ ★

8 notable facts · grade A

264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288

less more

Historical context — 276 AD

Calendar year

Year 276 (CCLXXVI) was a leap year starting on Saturday of the Julian calendar.

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

Historical context — 276 BC

Calendar year

Year 276 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 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: Saturday
January 1, 276
Ended on: Sunday
December 31, 276
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 270s
270–279
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,750
1750 years before 2026.

In other calendars

Hebrew: 4036 / 4037 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Monkey
Sexagenary cycle position 33 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 819 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 268 / 269 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 198 / 197 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 15
Digit product: 84
Digital root: 6
Palindrome: No
Bit width: 9 bits
Reversed: 672
Recamán's sequence: a(151) = 276
Square (n²): 76,176
Cube (n³): 21,024,576
Divisor count: 12
σ(n) — sum of divisors: 672
φ(n) — Euler's totient: 88
Sum of prime factors: 30

Primality

Prime factorization: 2 ² × 3 × 23

Nearest primes: 271 (−5) · 277 (+1)

Divisors & multiples

All divisors (12)

1 · 2 · 3 · 4 · 6 · 12 · 23 · 46 · 69 · 92 · 138 (half) · 276

Aliquot sum (sum of proper divisors): 396

Factor pairs (a × b = 276)

1 × 276

2 × 138

3 × 92

4 × 69

6 × 46

12 × 23

First multiples

276 · 552 (double) · 828 · 1,104 · 1,380 · 1,656 · 1,932 · 2,208 · 2,484 · 2,760

Sums & aliquot sequence

As consecutive integers: 91 + 92 + 93 31 + 32 + … + 38 1 + 2 + … + 23

Aliquot sequence: 276 → 396 → 696 → 1,104 → 1,872 → 3,770 → 3,790 → 3,050 → 2,716 → 2,772 → 5,964 → 10,164 → 19,628 → 19,684 → 22,876 → 26,404 → 30,044 — unresolved within range

Continued fraction of √n

√276 = [16; (1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 32)]

Period length 12 — the block in parentheses repeats forever.

Representations

In words: two hundred seventy-six
Ordinal: 276th
Roman numeral: CCLXXVI
Binary: 100010100
Octal: 424
Hexadecimal: 0x114
Base64: ARQ=
One's complement: 65,259 (16-bit)
Scientific notation: 2.76 × 10²
As a duration: 276 s = 4 minutes, 36 seconds

In other bases

ternary (3) 101020

quaternary (4) 10110

quinary (5) 2101

senary (6) 1140

septenary (7) 543

nonary (9) 336

undecimal (11) 231

duodecimal (12) 1b0

tridecimal (13) 183

tetradecimal (14) 15a

pentadecimal (15) 136

Palindromic in base 8

As an angle

276°

276° ≈ 4.817 rad

Compass bearing: W (west)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): σοϛʹ
Mayan (base 20): 𝋭·𝋰
Chinese: 二百七十六
Chinese (financial): 貳佰柒拾陸

In other modern scripts

Eastern Arabic ٢٧٦ Devanagari २७६ Bengali ২৭৬ Tamil ௨௭௬ Thai ๒๗๖ Tibetan ༢༧༦ Khmer ២៧៦ Lao ໒໗໖ Burmese ၂၇၆

Digit at this position in famous constants

π — Pi (π): Digit 276 = 2
e — Euler's number (e): Digit 276 = 4
φ — Golden ratio (φ): Digit 276 = 0
√2 — Pythagoras's (√2): Digit 276 = 5
ln 2 — Natural log of 2: Digit 276 = 4
γ — Euler-Mascheroni (γ): Digit 276 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 276, here are decompositions:

5 + 271 = 276
7 + 269 = 276
13 + 263 = 276
19 + 257 = 276
37 + 239 = 276
43 + 233 = 276
47 + 229 = 276
53 + 223 = 276

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Capital Letter E With Breve

U+0114

Uppercase letter (Lu)

UTF-8 encoding: C4 94 (2 bytes).

Lookup U+0114 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000114

RGB(0, 1, 20)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.20.

Address: 0.0.1.20
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.20

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

NANP area code 276

The number 276 is an active NANP area code (North American Numbering Plan).

Primary area: Southwestern Virginia
Region: Virginia
Country: United States

Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.

Look up area code 276 ↗

Musical pitch

Heard as a frequency, 276 Hz is closest to:

Concert pitch (A4 = 440 Hz): C♯4 (277.2 Hz, -7¢)
Scientific pitch (C4 = 256 Hz): C♯4 (271.2 Hz, +30¢)
Baroque pitch (A4 = 415 Hz): D4 (277 Hz, -6¢)