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5,120

5,120 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.).
Abundant Number Evil Number Harshad / Niven Pernicious Number Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
4
Digit sum
8
Digit product
0
Digital root
8
Palindrome
No
Bit width
13 bits
Reversed
215
Recamán's sequence
a(4,972) = 5,120
Square (n²)
26,214,400
Cube (n³)
134,217,728,000
Divisor count
22
σ(n) — sum of divisors
12,282
φ(n) — Euler's totient
2,048
Sum of prime factors
25

Primality

Prime factorization: 2 10 × 5

Nearest primes: 5,119 (−1) · 5,147 (+27)

Divisors & multiples

All divisors (22)
1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 32 · 40 · 64 · 80 · 128 · 160 · 256 · 320 · 512 · 640 · 1024 · 1280 · 2560 (half) · 5120
Aliquot sum (sum of proper divisors): 7,162
Factor pairs (a × b = 5,120)
1 × 5120
2 × 2560
4 × 1280
5 × 1024
8 × 640
10 × 512
16 × 320
20 × 256
32 × 160
40 × 128
64 × 80
First multiples
5,120 · 10,240 (double) · 15,360 · 20,480 · 25,600 · 30,720 · 35,840 · 40,960 · 46,080 · 51,200

Sums & aliquot sequence

As a sum of two squares: 32² + 64²
As consecutive integers: 1,022 + 1,023 + 1,024 + 1,025 + 1,026
Aliquot sequence: 5,120 7,162 3,584 4,600 6,560 9,316 8,072 7,078 3,542 3,370 2,714 1,606 1,058 601 1 0 — terminates at zero

Representations

In words
five thousand one hundred twenty
Ordinal
5120th
Binary
1010000000000
Octal
12000
Hexadecimal
0x1400
Base64
FAA=
One's complement
60,415 (16-bit)
In other bases
ternary (3) 21000122
quaternary (4) 1100000
quinary (5) 130440
senary (6) 35412
septenary (7) 20633
nonary (9) 7018
undecimal (11) 3935
duodecimal (12) 2b68
tridecimal (13) 243b
tetradecimal (14) 1c1a
pentadecimal (15) 17b5

Historical numeral systems

Babylonian (base 60)
𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic
𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆
Greek (Milesian)
͵ερκʹ
Mayan (base 20)
𝋬·𝋰·𝋠
Chinese
五千一百二十
Chinese (financial)
伍仟壹佰貳拾
In other modern scripts
Eastern Arabic ٥١٢٠ Devanagari ५१२० Bengali ৫১২০ Tamil ௫௧௨௦ Thai ๕๑๒๐ Tibetan ༥༡༢༠ Khmer ៥១២០ Lao ໕໑໒໐ Burmese ၅၁၂၀

Digit at this position in famous constants

π — Pi (π)
Digit 5,120 = 9
e — Euler's number (e)
Digit 5,120 = 0
φ — Golden ratio (φ)
Digit 5,120 = 8
√2 — Pythagoras's (√2)
Digit 5,120 = 2
ln 2 — Natural log of 2
Digit 5,120 = 3
γ — Euler-Mascheroni (γ)
Digit 5,120 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 5120, here are decompositions:

  • 7 + 5113 = 5120
  • 13 + 5107 = 5120
  • 19 + 5101 = 5120
  • 43 + 5077 = 5120
  • 61 + 5059 = 5120
  • 97 + 5023 = 5120
  • 109 + 5011 = 5120
  • 127 + 4993 = 5120

Showing the first eight; more decompositions exist.

Unicode codepoint
Canadian Syllabics Hyphen
U+1400
Dash punctuation (Pd)

UTF-8 encoding: E1 90 80 (3 bytes).

Hex color
#001400
RGB(0, 20, 0)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.20.0.

Address
0.0.20.0
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.20.0

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

Position in π

The digit sequence 5120 first appears in π at position 14,594 of the decimal expansion (the 14,594ordinal-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.