236
236 is a composite number, even, a calendar year.
236 (two hundred thirty-six) is an even 3-digit number. It is a composite number with 6 divisors, and factors as 2² × 59. Written other ways, in Roman numerals it is CCXXXVI and in binary, 11101100.
Interestingness
Historical context — 236 AD
Calendar year
Year 236 (CCXXXVI) was a leap year starting on Friday of the Julian calendar.
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Historical context — 236 BC
Calendar year
Year 236 BC was a year of the pre-Julian Roman calendar.
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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
-
Friday
January 1, 236
- Ended on
-
Saturday
December 31, 236
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
230s
230–239
- Century
-
3rd century
201–300
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,790
1790 years before 2026.
In other calendars
- Hebrew
-
3996 / 3997 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Dragon
Sexagenary cycle position 53 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
779 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
228 / 229 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
158 / 157 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 59
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√236 = [15; (2, 1, 3, 5, 1, 6, 1, 5, 3, 1, 2, 30)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- two hundred thirty-six
- Ordinal
- 236th
- Roman numeral
- CCXXXVI
- Binary
- 11101100
- Octal
- 354
- Hexadecimal
- 0xEC
- Base64
- 7A==
- One's complement
- 19 (8-bit)
- Scientific notation
- 2.36 × 10²
- As a duration
- 236 s = 3 minutes, 56 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- σλϛʹ
- Mayan (base 20)
- 𝋫·𝋰
- Chinese
- 二百三十六
- Chinese (financial)
- 貳佰參拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 236 = 7
- e — Euler's number (e)
- Digit 236 = 5
- φ — Golden ratio (φ)
- Digit 236 = 2
- √2 — Pythagoras's (√2)
- Digit 236 = 5
- ln 2 — Natural log of 2
- Digit 236 = 0
- γ — Euler-Mascheroni (γ)
- Digit 236 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 236, here are decompositions:
- 3 + 233 = 236
- 7 + 229 = 236
- 13 + 223 = 236
- 37 + 199 = 236
- 43 + 193 = 236
- 73 + 163 = 236
- 79 + 157 = 236
- 97 + 139 = 236
Showing the first eight; more decompositions exist.
UTF-8 encoding: C3 AC (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.236.
- Address
- 0.0.0.236
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.236
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 236 is an active NANP area code (North American Numbering Plan).
- Primary area
- Vancouver / Victoria
- Region
- British Columbia
- Country
- Canada
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
Heard as a frequency, 236 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯3 (233.1 Hz, +22¢)
- Scientific pitch (C4 = 256 Hz): B3 (241.6 Hz, -41¢)
- Baroque pitch (A4 = 415 Hz): B3 (232.9 Hz, +23¢)
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.