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21,362

21,362 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 Evil Number Gapful Number Recamán's Sequence Sphenic Number Squarefree

Properties

Parity
Even
Digit count
5
Digit sum
14
Digit product
72
Digital root
5
Palindrome
No
Bit width
15 bits
Reversed
26,312
Recamán's sequence
a(41,115) = 21,362
Square (n²)
456,335,044
Cube (n³)
9,748,229,209,928
Divisor count
8
σ(n) — sum of divisors
34,992
φ(n) — Euler's totient
9,700
Sum of prime factors
984

Primality

Prime factorization: 2 × 11 × 971

Nearest primes: 21,347 (−15) · 21,377 (+15)

Divisors & multiples

All divisors (8)
1 · 2 · 11 · 22 · 971 · 1942 · 10681 (half) · 21362
Aliquot sum (sum of proper divisors): 13,630
Factor pairs (a × b = 21,362)
1 × 21362
2 × 10681
11 × 1942
22 × 971
First multiples
21,362 · 42,724 (double) · 64,086 · 85,448 · 106,810 · 128,172 · 149,534 · 170,896 · 192,258 · 213,620

Sums & aliquot sequence

As consecutive integers: 5,339 + 5,340 + 5,341 + 5,342 1,937 + 1,938 + … + 1,947 464 + 465 + … + 507
Aliquot sequence: 21,362 13,630 12,290 9,850 8,564 6,430 5,162 2,938 1,850 1,684 1,270 1,034 694 350 394 200 265 — unresolved within range

Representations

In words
twenty-one thousand three hundred sixty-two
Ordinal
21362nd
Binary
101001101110010
Octal
51562
Hexadecimal
0x5372
Base64
U3I=
One's complement
44,173 (16-bit)
In other bases
ternary (3) 1002022012
quaternary (4) 11031302
quinary (5) 1140422
senary (6) 242522
septenary (7) 116165
nonary (9) 32265
undecimal (11) 15060
duodecimal (12) 10442
tridecimal (13) 9953
tetradecimal (14) 7adc
pentadecimal (15) 64e2

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian)
͵κατξβʹ
Mayan (base 20)
𝋢·𝋭·𝋨·𝋢
Chinese
二萬一千三百六十二
Chinese (financial)
貳萬壹仟參佰陸拾貳
In other modern scripts
Eastern Arabic ٢١٣٦٢ Devanagari २१३६२ Bengali ২১৩৬২ Tamil ௨௧௩௬௨ Thai ๒๑๓๖๒ Tibetan ༢༡༣༦༢ Khmer ២១៣៦២ Lao ໒໑໓໖໒ Burmese ၂၁၃၆၂

Digit at this position in famous constants

π — Pi (π)
Digit 21,362 = 1
e — Euler's number (e)
Digit 21,362 = 2
φ — Golden ratio (φ)
Digit 21,362 = 4
√2 — Pythagoras's (√2)
Digit 21,362 = 6
ln 2 — Natural log of 2
Digit 21,362 = 2
γ — Euler-Mascheroni (γ)
Digit 21,362 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 21362, here are decompositions:

  • 43 + 21319 = 21362
  • 79 + 21283 = 21362
  • 151 + 21211 = 21362
  • 193 + 21169 = 21362
  • 199 + 21163 = 21362
  • 223 + 21139 = 21362
  • 241 + 21121 = 21362
  • 331 + 21031 = 21362

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-5372
U+5372
Other letter (Lo)

UTF-8 encoding: E5 8D B2 (3 bytes).

Hex color
#005372
RGB(0, 83, 114)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.114.

Address
0.0.83.114
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.83.114

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

Position in π

The digit sequence 21362 first appears in π at position 191,431 of the decimal expansion (the 191,431ordinal-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.