4,320
4,320 is a composite number, even.
4,320 (four thousand three hundred twenty) is an even 4-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 3³ × 5. Its proper divisors sum to 10,800, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x10E0.
Interestingness
Properties
Primality
Prime factorization: 2 5 × 3 3 × 5
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√4,320 = [65; (1, 2, 1, 1, 1, 13, 1, 31, 1, 13, 1, 1, 1, 2, 1, 130)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- four thousand three hundred twenty
- Ordinal
- 4320th
- Binary
- 1000011100000
- Octal
- 10340
- Hexadecimal
- 0x10E0
- Base64
- EOA=
- One's complement
- 61,215 (16-bit)
- Scientific notation
- 4.32 × 10³
- As a duration
- 4,320 s = 1 hour, 12 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵δτκʹ
- Mayan (base 20)
- 𝋪·𝋰·𝋠
- Chinese
- 四千三百二十
- Chinese (financial)
- 肆仟參佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 4,320 = 3
- e — Euler's number (e)
- Digit 4,320 = 2
- φ — Golden ratio (φ)
- Digit 4,320 = 8
- √2 — Pythagoras's (√2)
- Digit 4,320 = 7
- ln 2 — Natural log of 2
- Digit 4,320 = 4
- γ — Euler-Mascheroni (γ)
- Digit 4,320 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4320, here are decompositions:
- 23 + 4297 = 4320
- 31 + 4289 = 4320
- 37 + 4283 = 4320
- 47 + 4273 = 4320
- 59 + 4261 = 4320
- 61 + 4259 = 4320
- 67 + 4253 = 4320
- 79 + 4241 = 4320
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 83 A0 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.16.224.
- Address
- 0.0.16.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.16.224
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 4,320 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯8 (4434.9 Hz, -45¢ — about midway to C8)
- Scientific pitch (C4 = 256 Hz): C♯8 (4339.6 Hz, -8¢)
- Baroque pitch (A4 = 415 Hz): D8 (4431.7 Hz, -44¢)
The digit sequence 4320 first appears in π at position 25,894 of the decimal expansion (the 25,894ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.