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23,428

23,428 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.).
Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence

Properties

Parity
Even
Digit count
5
Digit sum
19
Digit product
384
Digital root
1
Palindrome
No
Bit width
15 bits
Reversed
82,432
Recamán's sequence
a(39,459) = 23,428
Square (n²)
548,871,184
Cube (n³)
12,858,954,098,752
Divisor count
6
σ(n) — sum of divisors
41,006
φ(n) — Euler's totient
11,712
Sum of prime factors
5,861

Primality

Prime factorization: 2 2 × 5857

Nearest primes: 23,417 (−11) · 23,431 (+3)

Divisors & multiples

All divisors (6)
1 · 2 · 4 · 5857 · 11714 (half) · 23428
Aliquot sum (sum of proper divisors): 17,578
Factor pairs (a × b = 23,428)
1 × 23428
2 × 11714
4 × 5857
First multiples
23,428 · 46,856 (double) · 70,284 · 93,712 · 117,140 · 140,568 · 163,996 · 187,424 · 210,852 · 234,280

Sums & aliquot sequence

As a sum of two squares: 18² + 152²
As consecutive integers: 2,925 + 2,926 + … + 2,932
Aliquot sequence: 23,428 17,578 13,526 6,766 4,034 2,020 2,264 1,996 1,504 1,520 2,200 3,380 4,306 2,156 2,632 3,128 3,352 — unresolved within range

Representations

In words
twenty-three thousand four hundred twenty-eight
Ordinal
23428th
Binary
101101110000100
Octal
55604
Hexadecimal
0x5B84
Base64
W4Q=
One's complement
42,107 (16-bit)
In other bases
ternary (3) 1012010201
quaternary (4) 11232010
quinary (5) 1222203
senary (6) 300244
septenary (7) 125206
nonary (9) 35121
undecimal (11) 16669
duodecimal (12) 11684
tridecimal (13) a882
tetradecimal (14) 8776
pentadecimal (15) 6e1d

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵κγυκηʹ
Mayan (base 20)
𝋢·𝋲·𝋫·𝋨
Chinese
二萬三千四百二十八
Chinese (financial)
貳萬參仟肆佰貳拾捌
In other modern scripts
Eastern Arabic ٢٣٤٢٨ Devanagari २३४२८ Bengali ২৩৪২৮ Tamil ௨௩௪௨௮ Thai ๒๓๔๒๘ Tibetan ༢༣༤༢༨ Khmer ២៣៤២៨ Lao ໒໓໔໒໘ Burmese ၂၃၄၂၈

Digit at this position in famous constants

π — Pi (π)
Digit 23,428 = 7
e — Euler's number (e)
Digit 23,428 = 5
φ — Golden ratio (φ)
Digit 23,428 = 0
√2 — Pythagoras's (√2)
Digit 23,428 = 1
ln 2 — Natural log of 2
Digit 23,428 = 3
γ — Euler-Mascheroni (γ)
Digit 23,428 = 7

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 23428, here are decompositions:

  • 11 + 23417 = 23428
  • 29 + 23399 = 23428
  • 59 + 23369 = 23428
  • 71 + 23357 = 23428
  • 89 + 23339 = 23428
  • 101 + 23327 = 23428
  • 107 + 23321 = 23428
  • 131 + 23297 = 23428

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-5B84
U+5B84
Other letter (Lo)

UTF-8 encoding: E5 AE 84 (3 bytes).

Hex color
#005B84
RGB(0, 91, 132)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.91.132.

Address
0.0.91.132
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.91.132

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

Position in π

The digit sequence 23428 first appears in π at position 20,714 of the decimal expansion (the 20,714ordinal-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.