1,928
1,928 is a composite number, even, a calendar year.
Notable events — 1928 AD
- Sep 28 Alexander Fleming discovers penicillin at St. Mary's Hospital, London.
- Nov 18 Walt Disney's Steamboat Willie premieres, introducing Mickey Mouse.
- Aug 27 Sixty-three nations sign the Kellogg-Briand Pact renouncing war.
- Oct 1 The Soviet Union begins its first Five-Year Plan.
- Nov 6 Herbert Hoover is elected US president.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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, 1928
- Ended on
-
Monday
December 31, 1928
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Easter Sunday
-
April 8
Sunday, April 8, 1928
- Decade
-
1920s
1920–1929
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
98
98 years before 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
- Summer Olympics
- Yes
- Winter Olympics
-
Yes
Held in the same year as the Summer Games until 1992.
In other calendars
- Hebrew
-
5688 / 5689 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1346 / 1347 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Dragon
Sexagenary cycle position 5 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2471 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1306 / 1307 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1920 / 1921 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1850 / 1849 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 3
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 2 3 × 241
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred twenty-eight
- Ordinal
- 1928th
- Roman numeral
- MCMXXVIII
- Binary
- 11110001000
- Octal
- 3610
- Hexadecimal
- 0x788
- Base64
- B4g=
- One's complement
- 63,607 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡκηʹ
- Mayan (base 20)
- 𝋤·𝋰·𝋨
- Chinese
- 一千九百二十八
- Chinese (financial)
- 壹仟玖佰貳拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,928 = 7
- e — Euler's number (e)
- Digit 1,928 = 5
- φ — Golden ratio (φ)
- Digit 1,928 = 8
- √2 — Pythagoras's (√2)
- Digit 1,928 = 7
- ln 2 — Natural log of 2
- Digit 1,928 = 5
- γ — Euler-Mascheroni (γ)
- Digit 1,928 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1928, here are decompositions:
- 61 + 1867 = 1928
- 67 + 1861 = 1928
- 97 + 1831 = 1928
- 127 + 1801 = 1928
- 139 + 1789 = 1928
- 151 + 1777 = 1928
- 181 + 1747 = 1928
- 229 + 1699 = 1928
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE 88 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.136.
- Address
- 0.0.7.136
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.136
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 1928 first appears in π at position 47,181 of the decimal expansion (the 47,181ordinal-suffix:st digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.