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21,349

21,349 is a composite number, odd.

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 Recamán's Sequence Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
19
Digit product
216
Digital root
1
Palindrome
No
Bit width
15 bits
Reversed
94,312
Recamán's sequence
a(41,141) = 21,349
Square (n²)
455,779,801
Cube (n³)
9,730,442,971,549
Divisor count
4
σ(n) — sum of divisors
21,964
φ(n) — Euler's totient
20,736
Sum of prime factors
614

Primality

Prime factorization: 37 × 577

Nearest primes: 21,347 (−2) · 21,377 (+28)

Divisors & multiples

All divisors (4)
1 · 37 · 577 · 21349
Aliquot sum (sum of proper divisors): 615
Factor pairs (a × b = 21,349)
1 × 21349
37 × 577
First multiples
21,349 · 42,698 (double) · 64,047 · 85,396 · 106,745 · 128,094 · 149,443 · 170,792 · 192,141 · 213,490

Sums & aliquot sequence

As a sum of two squares: 18² + 145² = 30² + 143²
As consecutive integers: 10,674 + 10,675 559 + 560 + … + 595 252 + 253 + … + 325
Aliquot sequence: 21,349 615 393 135 105 87 33 15 9 4 3 1 0 — terminates at zero

Representations

In words
twenty-one thousand three hundred forty-nine
Ordinal
21349th
Binary
101001101100101
Octal
51545
Hexadecimal
0x5365
Base64
U2U=
One's complement
44,186 (16-bit)
In other bases
ternary (3) 1002021201
quaternary (4) 11031211
quinary (5) 1140344
senary (6) 242501
septenary (7) 116146
nonary (9) 32251
undecimal (11) 15049
duodecimal (12) 10431
tridecimal (13) 9943
tetradecimal (14) 7acd
pentadecimal (15) 64d4

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵κατμθʹ
Mayan (base 20)
𝋢·𝋭·𝋧·𝋩
Chinese
二萬一千三百四十九
Chinese (financial)
貳萬壹仟參佰肆拾玖
In other modern scripts
Eastern Arabic ٢١٣٤٩ Devanagari २१३४९ Bengali ২১৩৪৯ Tamil ௨௧௩௪௯ Thai ๒๑๓๔๙ Tibetan ༢༡༣༤༩ Khmer ២១៣៤៩ Lao ໒໑໓໔໙ Burmese ၂၁၃၄၉

Digit at this position in famous constants

π — Pi (π)
Digit 21,349 = 2
e — Euler's number (e)
Digit 21,349 = 4
φ — Golden ratio (φ)
Digit 21,349 = 5
√2 — Pythagoras's (√2)
Digit 21,349 = 4
ln 2 — Natural log of 2
Digit 21,349 = 5
γ — Euler-Mascheroni (γ)
Digit 21,349 = 8

Also seen as

Unicode codepoint
CJK Unified Ideograph-5365
U+5365
Other letter (Lo)

UTF-8 encoding: E5 8D A5 (3 bytes).

Hex color
#005365
RGB(0, 83, 101)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.101.

Address
0.0.83.101
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.83.101

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

Position in π

The digit sequence 21349 first appears in π at position 5,790 of the decimal expansion (the 5,790ordinal-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.