1,672
1,672 is a composite number, even, a calendar year.
Notable events — 1672 AD
- Apr 6 France attacks the Dutch Republic, beginning the Franco-Dutch War.
- Aug 20 Mob in The Hague kills the De Witt brothers; Stadtholder William III rises.
- Jul 28 Anglo-French naval force ravages Dutch coasts.
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
-
Friday
January 1, 1672
- Ended on
-
Saturday
December 31, 1672
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 17
Sunday, April 17, 1672
- Decade
-
1670s
1670–1679
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
354
354 years before 2026.
In other calendars
- Hebrew
-
5432 / 5433 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1082 / 1083 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Rat
Sexagenary cycle position 49 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2215 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1050 / 1051 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1664 / 1665 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1594 / 1593 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digit product
- 84
- Digital root
- 7
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 2,761
- Recamán's sequence
- a(812) = 1,672
- Square (n²)
- 2,795,584
- Cube (n³)
- 4,674,216,448
- Divisor count
- 16
- σ(n) — sum of divisors
- 3,600
- φ(n) — Euler's totient
- 720
- Sum of prime factors
- 36
Primality
Prime factorization: 2 3 × 11 × 19
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred seventy-two
- Ordinal
- 1672nd
- Roman numeral
- MDCLXXII
- Binary
- 11010001000
- Octal
- 3210
- Hexadecimal
- 0x688
- Base64
- Bog=
- One's complement
- 63,863 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αχοβʹ
- Mayan (base 20)
- 𝋤·𝋣·𝋬
- Chinese
- 一千六百七十二
- Chinese (financial)
- 壹仟陸佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,672 = 5
- e — Euler's number (e)
- Digit 1,672 = 9
- φ — Golden ratio (φ)
- Digit 1,672 = 8
- √2 — Pythagoras's (√2)
- Digit 1,672 = 9
- ln 2 — Natural log of 2
- Digit 1,672 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,672 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1672, here are decompositions:
- 3 + 1669 = 1672
- 5 + 1667 = 1672
- 53 + 1619 = 1672
- 59 + 1613 = 1672
- 71 + 1601 = 1672
- 89 + 1583 = 1672
- 101 + 1571 = 1672
- 113 + 1559 = 1672
Showing the first eight; more decompositions exist.
UTF-8 encoding: DA 88 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.136.
- Address
- 0.0.6.136
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.136
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 1672 first appears in π at position 3,399 of the decimal expansion (the 3,399ordinal-suffix:th 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.