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18,104

18,104 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 Happy Number Odious Number Pernicious Number Recamán's Sequence

Properties

Parity
Even
Digit count
5
Digit sum
14
Digit product
0
Digital root
5
Palindrome
No
Bit width
15 bits
Reversed
40,181
Recamán's sequence
a(15,848) = 18,104
Square (n²)
327,754,816
Cube (n³)
5,933,673,188,864
Divisor count
16
σ(n) — sum of divisors
35,520
φ(n) — Euler's totient
8,640
Sum of prime factors
110

Primality

Prime factorization: 2 3 × 31 × 73

Nearest primes: 18,097 (−7) · 18,119 (+15)

Divisors & multiples

All divisors (16)
1 · 2 · 4 · 8 · 31 · 62 · 73 · 124 · 146 · 248 · 292 · 584 · 2263 · 4526 · 9052 (half) · 18104
Aliquot sum (sum of proper divisors): 17,416
Factor pairs (a × b = 18,104)
1 × 18104
2 × 9052
4 × 4526
8 × 2263
31 × 584
62 × 292
73 × 248
124 × 146
First multiples
18,104 · 36,208 (double) · 54,312 · 72,416 · 90,520 · 108,624 · 126,728 · 144,832 · 162,936 · 181,040

Sums & aliquot sequence

As consecutive integers: 1,124 + 1,125 + … + 1,139 569 + 570 + … + 599 212 + 213 + … + 284
Aliquot sequence: 18,104 17,416 20,024 17,536 17,654 15,274 10,934 9,802 6,668 5,008 4,726 2,834 1,786 1,094 550 566 286 — unresolved within range

Representations

In words
eighteen thousand one hundred four
Ordinal
18104th
Binary
100011010111000
Octal
43270
Hexadecimal
0x46B8
Base64
Rrg=
One's complement
47,431 (16-bit)
In other bases
ternary (3) 220211112
quaternary (4) 10122320
quinary (5) 1034404
senary (6) 215452
septenary (7) 103532
nonary (9) 26745
undecimal (11) 12669
duodecimal (12) a588
tridecimal (13) 8318
tetradecimal (14) 6852
pentadecimal (15) 556e

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιηρδʹ
Mayan (base 20)
𝋢·𝋥·𝋥·𝋤
Chinese
一萬八千一百零四
Chinese (financial)
壹萬捌仟壹佰零肆
In other modern scripts
Eastern Arabic ١٨١٠٤ Devanagari १८१०४ Bengali ১৮১০৪ Tamil ௧௮௧௦௪ Thai ๑๘๑๐๔ Tibetan ༡༨༡༠༤ Khmer ១៨១០៤ Lao ໑໘໑໐໔ Burmese ၁၈၁၀၄

Digit at this position in famous constants

π — Pi (π)
Digit 18,104 = 4
e — Euler's number (e)
Digit 18,104 = 9
φ — Golden ratio (φ)
Digit 18,104 = 7
√2 — Pythagoras's (√2)
Digit 18,104 = 3
ln 2 — Natural log of 2
Digit 18,104 = 4
γ — Euler-Mascheroni (γ)
Digit 18,104 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18104, here are decompositions:

  • 7 + 18097 = 18104
  • 43 + 18061 = 18104
  • 61 + 18043 = 18104
  • 127 + 17977 = 18104
  • 181 + 17923 = 18104
  • 193 + 17911 = 18104
  • 223 + 17881 = 18104
  • 241 + 17863 = 18104

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-46B8
U+46B8
Other letter (Lo)

UTF-8 encoding: E4 9A B8 (3 bytes).

Hex color
#0046B8
RGB(0, 70, 184)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.184.

Address
0.0.70.184
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.70.184

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

Position in π

The digit sequence 18104 first appears in π at position 38,651 of the decimal expansion (the 38,651ordinal-suffix:st 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.