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20,340

20,340 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 Arithmetic Number Gapful Number Harshad / Niven Odious Number Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
9
Digit product
0
Digital root
9
Palindrome
No
Bit width
15 bits
Reversed
4,302
Recamán's sequence
a(86,536) = 20,340
Square (n²)
413,715,600
Cube (n³)
8,414,975,304,000
Divisor count
36
σ(n) — sum of divisors
62,244
φ(n) — Euler's totient
5,376
Sum of prime factors
128

Primality

Prime factorization: 2 2 × 3 2 × 5 × 113

Nearest primes: 20,333 (−7) · 20,341 (+1)

Divisors & multiples

All divisors (36)
1 · 2 · 3 · 4 · 5 · 6 · 9 · 10 · 12 · 15 · 18 · 20 · 30 · 36 · 45 · 60 · 90 · 113 · 180 · 226 · 339 · 452 · 565 · 678 · 1017 · 1130 · 1356 · 1695 · 2034 · 2260 · 3390 · 4068 · 5085 · 6780 · 10170 (half) · 20340
Aliquot sum (sum of proper divisors): 41,904
Factor pairs (a × b = 20,340)
1 × 20340
2 × 10170
3 × 6780
4 × 5085
5 × 4068
6 × 3390
9 × 2260
10 × 2034
12 × 1695
15 × 1356
18 × 1130
20 × 1017
30 × 678
36 × 565
45 × 452
60 × 339
90 × 226
113 × 180
First multiples
20,340 · 40,680 (double) · 61,020 · 81,360 · 101,700 · 122,040 · 142,380 · 162,720 · 183,060 · 203,400

Sums & aliquot sequence

As a sum of two squares: 36² + 138² = 54² + 132²
As consecutive integers: 6,779 + 6,780 + 6,781 4,066 + 4,067 + 4,068 + 4,069 + 4,070 2,539 + 2,540 + … + 2,546 2,256 + 2,257 + … + 2,264
Aliquot sequence: 20,340 41,904 79,616 79,816 83,624 73,186 47,198 23,602 11,804 10,540 13,652 10,246 5,594 2,800 4,888 5,192 5,608 — unresolved within range

Representations

In words
twenty thousand three hundred forty
Ordinal
20340th
Binary
100111101110100
Octal
47564
Hexadecimal
0x4F74
Base64
T3Q=
One's complement
45,195 (16-bit)
In other bases
ternary (3) 1000220100
quaternary (4) 10331310
quinary (5) 1122330
senary (6) 234100
septenary (7) 113205
nonary (9) 30810
undecimal (11) 14311
duodecimal (12) b930
tridecimal (13) 9348
tetradecimal (14) 75ac
pentadecimal (15) 6060

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
Egyptian hieroglyphic
𓂍𓂍𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian)
͵κτμʹ
Mayan (base 20)
𝋢·𝋪·𝋱·𝋠
Chinese
二萬零三百四十
Chinese (financial)
貳萬零參佰肆拾
In other modern scripts
Eastern Arabic ٢٠٣٤٠ Devanagari २०३४० Bengali ২০৩৪০ Tamil ௨௦௩௪௦ Thai ๒๐๓๔๐ Tibetan ༢༠༣༤༠ Khmer ២០៣៤០ Lao ໒໐໓໔໐ Burmese ၂၀၃၄၀

Digit at this position in famous constants

π — Pi (π)
Digit 20,340 = 8
e — Euler's number (e)
Digit 20,340 = 7
φ — Golden ratio (φ)
Digit 20,340 = 6
√2 — Pythagoras's (√2)
Digit 20,340 = 6
ln 2 — Natural log of 2
Digit 20,340 = 0
γ — Euler-Mascheroni (γ)
Digit 20,340 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20340, here are decompositions:

  • 7 + 20333 = 20340
  • 13 + 20327 = 20340
  • 17 + 20323 = 20340
  • 43 + 20297 = 20340
  • 53 + 20287 = 20340
  • 71 + 20269 = 20340
  • 79 + 20261 = 20340
  • 107 + 20233 = 20340

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-4F74
U+4F74
Other letter (Lo)

UTF-8 encoding: E4 BD B4 (3 bytes).

Hex color
#004F74
RGB(0, 79, 116)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.79.116.

Address
0.0.79.116
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.79.116

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

Position in π

The digit sequence 20340 first appears in π at position 234,443 of the decimal expansion (the 234,443ordinal-suffix:rd 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.