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18,124

18,124 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
16
Digit product
64
Digital root
7
Palindrome
No
Bit width
15 bits
Reversed
42,181
Recamán's sequence
a(15,596) = 18,124
Square (n²)
328,479,376
Cube (n³)
5,953,360,210,624
Divisor count
12
σ(n) — sum of divisors
33,264
φ(n) — Euler's totient
8,624
Sum of prime factors
224

Primality

Prime factorization: 2 2 × 23 × 197

Nearest primes: 18,121 (−3) · 18,127 (+3)

Divisors & multiples

All divisors (12)
1 · 2 · 4 · 23 · 46 · 92 · 197 · 394 · 788 · 4531 · 9062 (half) · 18124
Aliquot sum (sum of proper divisors): 15,140
Factor pairs (a × b = 18,124)
1 × 18124
2 × 9062
4 × 4531
23 × 788
46 × 394
92 × 197
First multiples
18,124 · 36,248 (double) · 54,372 · 72,496 · 90,620 · 108,744 · 126,868 · 144,992 · 163,116 · 181,240

Sums & aliquot sequence

As consecutive integers: 2,262 + 2,263 + … + 2,269 777 + 778 + … + 799 7 + 8 + … + 190
Aliquot sequence: 18,124 15,140 16,696 14,624 14,230 11,402 5,704 5,816 5,104 6,056 5,314 2,660 4,060 6,020 8,764 8,820 22,302 — unresolved within range

Representations

In words
eighteen thousand one hundred twenty-four
Ordinal
18124th
Binary
100011011001100
Octal
43314
Hexadecimal
0x46CC
Base64
Rsw=
One's complement
47,411 (16-bit)
In other bases
ternary (3) 220212021
quaternary (4) 10123030
quinary (5) 1034444
senary (6) 215524
septenary (7) 103561
nonary (9) 26767
undecimal (11) 12687
duodecimal (12) a5a4
tridecimal (13) 8332
tetradecimal (14) 6868
pentadecimal (15) 5584

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒁹𒁹 𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιηρκδʹ
Mayan (base 20)
𝋢·𝋥·𝋦·𝋤
Chinese
一萬八千一百二十四
Chinese (financial)
壹萬捌仟壹佰貳拾肆
In other modern scripts
Eastern Arabic ١٨١٢٤ Devanagari १८१२४ Bengali ১৮১২৪ Tamil ௧௮௧௨௪ Thai ๑๘๑๒๔ Tibetan ༡༨༡༢༤ Khmer ១៨១២៤ Lao ໑໘໑໒໔ Burmese ၁၈၁၂၄

Digit at this position in famous constants

π — Pi (π)
Digit 18,124 = 8
e — Euler's number (e)
Digit 18,124 = 1
φ — Golden ratio (φ)
Digit 18,124 = 8
√2 — Pythagoras's (√2)
Digit 18,124 = 9
ln 2 — Natural log of 2
Digit 18,124 = 5
γ — Euler-Mascheroni (γ)
Digit 18,124 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18124, here are decompositions:

  • 3 + 18121 = 18124
  • 5 + 18119 = 18124
  • 47 + 18077 = 18124
  • 83 + 18041 = 18124
  • 137 + 17987 = 18124
  • 167 + 17957 = 18124
  • 233 + 17891 = 18124
  • 317 + 17807 = 18124

Showing the first eight; more decompositions exist.

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

UTF-8 encoding: E4 9B 8C (3 bytes).

Hex color
#0046CC
RGB(0, 70, 204)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.204.

Address
0.0.70.204
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.70.204

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

Position in π

The digit sequence 18124 first appears in π at position 392,367 of the decimal expansion (the 392,367ordinal-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.