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5,280

5,280 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

5,280 (five thousand two hundred eighty) is an even 4-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 3 × 5 × 11. Its proper divisors sum to 12,864, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x14A0.

Abundant Number Arithmetic Number Evil Number Harshad / Niven Practical Number Recamán's Sequence Refactorable Number Semiperfect Number

Interestingness

Properties

Parity
Even
Digit count
4
Digit sum
15
Digit product
0
Digital root
6
Palindrome
No
Bit width
13 bits
Reversed
825
Recamán's sequence
a(4,632) = 5,280
Square (n²)
27,878,400
Cube (n³)
147,197,952,000
Divisor count
48
σ(n) — sum of divisors
18,144
φ(n) — Euler's totient
1,280
Sum of prime factors
29

Primality

Prime factorization: 2 5 × 3 × 5 × 11

Nearest primes: 5,279 (−1) · 5,281 (+1)

Divisors & multiples

All divisors (48)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 11 · 12 · 15 · 16 · 20 · 22 · 24 · 30 · 32 · 33 · 40 · 44 · 48 · 55 · 60 · 66 · 80 · 88 · 96 · 110 · 120 · 132 · 160 · 165 · 176 · 220 · 240 · 264 · 330 · 352 · 440 · 480 · 528 · 660 · 880 · 1056 · 1320 · 1760 · 2640 (half) · 5280
Aliquot sum (sum of proper divisors): 12,864
Factor pairs (a × b = 5,280)
1 × 5280
2 × 2640
3 × 1760
4 × 1320
5 × 1056
6 × 880
8 × 660
10 × 528
11 × 480
12 × 440
15 × 352
16 × 330
20 × 264
22 × 240
24 × 220
30 × 176
32 × 165
33 × 160
40 × 132
44 × 120
48 × 110
55 × 96
60 × 88
66 × 80
First multiples
5,280 · 10,560 (double) · 15,840 · 21,120 · 26,400 · 31,680 · 36,960 · 42,240 · 47,520 · 52,800

Sums & aliquot sequence

As consecutive integers: 1,759 + 1,760 + 1,761 1,054 + 1,055 + 1,056 + 1,057 + 1,058 475 + 476 + … + 485 345 + 346 + … + 359
Aliquot sequence: 5,280 12,864 21,680 28,912 31,848 47,832 71,808 148,512 359,520 946,848 1,895,712 4,539,360 12,180,336 23,781,648 44,267,568 76,111,632 139,130,668 — unresolved within range

Continued fraction of √n

√5,280 = [72; (1, 1, 1, 35, 1, 1, 1, 144)]

Period length 8 — the block in parentheses repeats forever.

Representations

In words
five thousand two hundred eighty
Ordinal
5280th
Binary
1010010100000
Octal
12240
Hexadecimal
0x14A0
Base64
FKA=
One's complement
60,255 (16-bit)
Scientific notation
5.28 × 10³
As a duration
5,280 s = 1 hour, 28 minutes
In other bases
ternary (3) 21020120
quaternary (4) 1102200
quinary (5) 132110
senary (6) 40240
septenary (7) 21252
nonary (9) 7216
undecimal (11) 3a70
duodecimal (12) 3080
tridecimal (13) 2532
tetradecimal (14) 1cd2
pentadecimal (15) 1870

As an angle

5,280° = 14 × 360° + 240°
240° ≈ 4.189 rad
Compass bearing: WSW (west-southwest)

Historical numeral systems

Babylonian (base 60)
𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
Egyptian hieroglyphic
𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian)
͵εσπʹ
Mayan (base 20)
𝋭·𝋤·𝋠
Chinese
五千二百八十
Chinese (financial)
伍仟貳佰捌拾
In other modern scripts
Eastern Arabic ٥٢٨٠ Devanagari ५२८० Bengali ৫২৮০ Tamil ௫௨௮௦ Thai ๕๒๘๐ Tibetan ༥༢༨༠ Khmer ៥២៨០ Lao ໕໒໘໐ Burmese ၅၂၈၀

Digit at this position in famous constants

π — Pi (π)
Digit 5,280 = 4
e — Euler's number (e)
Digit 5,280 = 1
φ — Golden ratio (φ)
Digit 5,280 = 0
√2 — Pythagoras's (√2)
Digit 5,280 = 4
ln 2 — Natural log of 2
Digit 5,280 = 9
γ — Euler-Mascheroni (γ)
Digit 5,280 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 5280, here are decompositions:

  • 7 + 5273 = 5280
  • 19 + 5261 = 5280
  • 43 + 5237 = 5280
  • 47 + 5233 = 5280
  • 53 + 5227 = 5280
  • 71 + 5209 = 5280
  • 83 + 5197 = 5280
  • 101 + 5179 = 5280

Showing the first eight; more decompositions exist.

Unicode codepoint
Canadian Syllabics Naskapi Cwaa
U+14A0
Other letter (Lo)

UTF-8 encoding: E1 92 A0 (3 bytes).

Hex color
#0014A0
RGB(0, 20, 160)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.20.160.

Address
0.0.20.160
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.20.160

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 5,280 Hz is closest to:

  • Concert pitch (A4 = 440 Hz): E8 (5274 Hz, +2¢)
  • Scientific pitch (C4 = 256 Hz): E8 (5160.6 Hz, +40¢)
  • Baroque pitch (A4 = 415 Hz): F8 (5270.2 Hz, +3¢)
Physics & measurement

5,280 is the number of feet in a mile.

Position in π

The digit sequence 5280 first appears in π at position 3,415 of the decimal expansion (the 3,415ordinal-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°.