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28,016

28,016 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.).
Abundant Number Evil Number Harshad / Niven 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
61,082
Recamán's sequence
a(34,399) = 28,016
Square (n²)
784,896,256
Cube (n³)
21,989,653,508,096
Divisor count
20
σ(n) — sum of divisors
58,032
φ(n) — Euler's totient
13,056
Sum of prime factors
128

Primality

Prime factorization: 2 4 × 17 × 103

Nearest primes: 28,001 (−15) · 28,019 (+3)

Divisors & multiples

All divisors (20)
1 · 2 · 4 · 8 · 16 · 17 · 34 · 68 · 103 · 136 · 206 · 272 · 412 · 824 · 1648 · 1751 · 3502 · 7004 · 14008 (half) · 28016
Aliquot sum (sum of proper divisors): 30,016
Factor pairs (a × b = 28,016)
1 × 28016
2 × 14008
4 × 7004
8 × 3502
16 × 1751
17 × 1648
34 × 824
68 × 412
103 × 272
136 × 206
First multiples
28,016 · 56,032 (double) · 84,048 · 112,064 · 140,080 · 168,096 · 196,112 · 224,128 · 252,144 · 280,160

Sums & aliquot sequence

As consecutive integers: 1,640 + 1,641 + … + 1,656 860 + 861 + … + 891 221 + 222 + … + 323
Aliquot sequence: 28,016 30,016 39,072 75,840 168,000 465,984 871,326 1,016,586 1,186,056 2,497,944 4,205,256 7,951,224 11,926,896 18,884,376 40,364,424 68,956,086 73,228,362 — unresolved within range

Representations

In words
twenty-eight thousand sixteen
Ordinal
28016th
Binary
110110101110000
Octal
66560
Hexadecimal
0x6D70
Base64
bXA=
One's complement
37,519 (16-bit)
In other bases
ternary (3) 1102102122
quaternary (4) 12311300
quinary (5) 1344031
senary (6) 333412
septenary (7) 144452
nonary (9) 42378
undecimal (11) 1a05a
duodecimal (12) 14268
tridecimal (13) c9a1
tetradecimal (14) a2d2
pentadecimal (15) 847b

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵κηιϛʹ
Mayan (base 20)
𝋣·𝋪·𝋠·𝋰
Chinese
二萬八千零一十六
Chinese (financial)
貳萬捌仟零壹拾陸
In other modern scripts
Eastern Arabic ٢٨٠١٦ Devanagari २८०१६ Bengali ২৮০১৬ Tamil ௨௮௦௧௬ Thai ๒๘๐๑๖ Tibetan ༢༨༠༡༦ Khmer ២៨០១៦ Lao ໒໘໐໑໖ Burmese ၂၈၀၁၆

Digit at this position in famous constants

π — Pi (π)
Digit 28,016 = 7
e — Euler's number (e)
Digit 28,016 = 4
φ — Golden ratio (φ)
Digit 28,016 = 4
√2 — Pythagoras's (√2)
Digit 28,016 = 5
ln 2 — Natural log of 2
Digit 28,016 = 0
γ — Euler-Mascheroni (γ)
Digit 28,016 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 28016, here are decompositions:

  • 19 + 27997 = 28016
  • 73 + 27943 = 28016
  • 97 + 27919 = 28016
  • 193 + 27823 = 28016
  • 199 + 27817 = 28016
  • 223 + 27793 = 28016
  • 277 + 27739 = 28016
  • 283 + 27733 = 28016

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-6D70
U+6D70
Other letter (Lo)

UTF-8 encoding: E6 B5 B0 (3 bytes).

Hex color
#006D70
RGB(0, 109, 112)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.109.112.

Address
0.0.109.112
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.109.112

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

Position in π

The digit sequence 28016 first appears in π at position 78,591 of the decimal expansion (the 78,591ordinal-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.