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18,016

18,016 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.).
Arithmetic Number Deficient Number Flippable Gapful Number Harshad / Niven Odious Number Pernicious Number Recamán's Sequence

Properties

Parity
Even
Digit count
5
Digit sum
16
Digit product
0
Digital root
7
Palindrome
No
Bit width
15 bits
Reversed
61,081
Flips to (rotate 180°)
91,081
Recamán's sequence
a(8,128) = 18,016
Square (n²)
324,576,256
Cube (n³)
5,847,565,828,096
Divisor count
12
σ(n) — sum of divisors
35,532
φ(n) — Euler's totient
8,992
Sum of prime factors
573

Primality

Prime factorization: 2 5 × 563

Nearest primes: 18,013 (−3) · 18,041 (+25)

Divisors & multiples

All divisors (12)
1 · 2 · 4 · 8 · 16 · 32 · 563 · 1126 · 2252 · 4504 · 9008 (half) · 18016
Aliquot sum (sum of proper divisors): 17,516
Factor pairs (a × b = 18,016)
1 × 18016
2 × 9008
4 × 4504
8 × 2252
16 × 1126
32 × 563
First multiples
18,016 · 36,032 (double) · 54,048 · 72,064 · 90,080 · 108,096 · 126,112 · 144,128 · 162,144 · 180,160

Sums & aliquot sequence

As consecutive integers: 250 + 251 + … + 313
Aliquot sequence: 18,016 17,516 14,404 12,840 26,040 66,120 149,880 300,120 637,320 1,332,600 2,800,320 6,093,744 9,857,616 16,718,064 30,397,968 54,674,526 54,765,474 — unresolved within range

Representations

In words
eighteen thousand sixteen
Ordinal
18016th
Binary
100011001100000
Octal
43140
Hexadecimal
0x4660
Base64
RmA=
One's complement
47,519 (16-bit)
In other bases
ternary (3) 220201021
quaternary (4) 10121200
quinary (5) 1034031
senary (6) 215224
septenary (7) 103345
nonary (9) 26637
undecimal (11) 12599
duodecimal (12) a514
tridecimal (13) 827b
tetradecimal (14) 67cc
pentadecimal (15) 5511

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 · 𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιηιϛʹ
Mayan (base 20)
𝋢·𝋥·𝋠·𝋰
Chinese
一萬八千零一十六
Chinese (financial)
壹萬捌仟零壹拾陸
In other modern scripts
Eastern Arabic ١٨٠١٦ Devanagari १८०१६ Bengali ১৮০১৬ Tamil ௧௮௦௧௬ Thai ๑๘๐๑๖ Tibetan ༡༨༠༡༦ Khmer ១៨០១៦ Lao ໑໘໐໑໖ Burmese ၁၈၀၁၆

Digit at this position in famous constants

π — Pi (π)
Digit 18,016 = 7
e — Euler's number (e)
Digit 18,016 = 4
φ — Golden ratio (φ)
Digit 18,016 = 5
√2 — Pythagoras's (√2)
Digit 18,016 = 8
ln 2 — Natural log of 2
Digit 18,016 = 1
γ — Euler-Mascheroni (γ)
Digit 18,016 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18016, here are decompositions:

  • 3 + 18013 = 18016
  • 29 + 17987 = 18016
  • 59 + 17957 = 18016
  • 107 + 17909 = 18016
  • 113 + 17903 = 18016
  • 179 + 17837 = 18016
  • 227 + 17789 = 18016
  • 233 + 17783 = 18016

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-4660
U+4660
Other letter (Lo)

UTF-8 encoding: E4 99 A0 (3 bytes).

Hex color
#004660
RGB(0, 70, 96)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.96.

Address
0.0.70.96
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.70.96

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

Position in π

The digit sequence 18016 first appears in π at position 51,265 of the decimal expansion (the 51,265ordinal-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.