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27,440

27,440 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 Odious Number Pernicious Number Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
17
Digit product
0
Digital root
8
Palindrome
No
Bit width
15 bits
Reversed
4,472
Recamán's sequence
a(314,480) = 27,440
Square (n²)
752,953,600
Cube (n³)
20,661,046,784,000
Divisor count
40
σ(n) — sum of divisors
74,400
φ(n) — Euler's totient
9,408
Sum of prime factors
34

Primality

Prime factorization: 2 4 × 5 × 7 3

Nearest primes: 27,437 (−3) · 27,449 (+9)

Divisors & multiples

All divisors (40)
1 · 2 · 4 · 5 · 7 · 8 · 10 · 14 · 16 · 20 · 28 · 35 · 40 · 49 · 56 · 70 · 80 · 98 · 112 · 140 · 196 · 245 · 280 · 343 · 392 · 490 · 560 · 686 · 784 · 980 · 1372 · 1715 · 1960 · 2744 · 3430 · 3920 · 5488 · 6860 · 13720 (half) · 27440
Aliquot sum (sum of proper divisors): 46,960
Factor pairs (a × b = 27,440)
1 × 27440
2 × 13720
4 × 6860
5 × 5488
7 × 3920
8 × 3430
10 × 2744
14 × 1960
16 × 1715
20 × 1372
28 × 980
35 × 784
40 × 686
49 × 560
56 × 490
70 × 392
80 × 343
98 × 280
112 × 245
140 × 196
First multiples
27,440 · 54,880 (double) · 82,320 · 109,760 · 137,200 · 164,640 · 192,080 · 219,520 · 246,960 · 274,400

Sums & aliquot sequence

As consecutive integers: 5,486 + 5,487 + 5,488 + 5,489 + 5,490 3,917 + 3,918 + … + 3,923 842 + 843 + … + 873 767 + 768 + … + 801
Aliquot sequence: 27,440 46,960 62,408 59,092 61,868 46,408 40,622 23,578 11,792 13,504 13,420 17,828 13,378 6,692 6,748 6,804 13,580 — unresolved within range

Representations

In words
twenty-seven thousand four hundred forty
Ordinal
27440th
Binary
110101100110000
Octal
65460
Hexadecimal
0x6B30
Base64
azA=
One's complement
38,095 (16-bit)
In other bases
ternary (3) 1101122022
quaternary (4) 12230300
quinary (5) 1334230
senary (6) 331012
septenary (7) 143000
nonary (9) 41568
undecimal (11) 19686
duodecimal (12) 13a68
tridecimal (13) c64a
tetradecimal (14) a000
pentadecimal (15) 81e5

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian)
͵κζυμʹ
Mayan (base 20)
𝋣·𝋨·𝋬·𝋠
Chinese
二萬七千四百四十
Chinese (financial)
貳萬柒仟肆佰肆拾
In other modern scripts
Eastern Arabic ٢٧٤٤٠ Devanagari २७४४० Bengali ২৭৪৪০ Tamil ௨௭௪௪௦ Thai ๒๗๔๔๐ Tibetan ༢༧༤༤༠ Khmer ២៧៤៤០ Lao ໒໗໔໔໐ Burmese ၂၇၄၄၀

Digit at this position in famous constants

π — Pi (π)
Digit 27,440 = 9
e — Euler's number (e)
Digit 27,440 = 4
φ — Golden ratio (φ)
Digit 27,440 = 0
√2 — Pythagoras's (√2)
Digit 27,440 = 8
ln 2 — Natural log of 2
Digit 27,440 = 4
γ — Euler-Mascheroni (γ)
Digit 27,440 = 6

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 27440, here are decompositions:

  • 3 + 27437 = 27440
  • 13 + 27427 = 27440
  • 31 + 27409 = 27440
  • 43 + 27397 = 27440
  • 73 + 27367 = 27440
  • 79 + 27361 = 27440
  • 103 + 27337 = 27440
  • 157 + 27283 = 27440

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-6B30
U+6B30
Other letter (Lo)

UTF-8 encoding: E6 AC B0 (3 bytes).

Hex color
#006B30
RGB(0, 107, 48)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.107.48.

Address
0.0.107.48
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.107.48

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

Position in π

The digit sequence 27440 first appears in π at position 39,310 of the decimal expansion (the 39,310ordinal-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.