1,672
1,672 is a composite number, even, a calendar year.
1,672 (one thousand six hundred seventy-two) is an even 4-digit number. It is a composite number with 16 divisors, and factors as 2³ × 11 × 19. Its proper divisors sum to 1,928, more than the number itself, making it an abundant number. Written other ways, in Roman numerals it is MDCLXXII and in binary, 11010001000.
Interestingness
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
Continued fraction of √n
√1,672 = [40; (1, 8, 10, 8, 1, 80)]
Period length 6 — the block in parentheses repeats forever.
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)
- Scientific notation
- 1.672 × 10³
- As a duration
- 1,672 s = 27 minutes, 52 seconds
As an angle
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.
Heard as a frequency, 1,672 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯6 (1661.2 Hz, +11¢)
- Scientific pitch (C4 = 256 Hz): G♯6 (1625.5 Hz, +49¢ — about midway to A6)
- Baroque pitch (A4 = 415 Hz): A6 (1660 Hz, +12¢)
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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.