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13,445

13,445 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
17
Digit product
240
Digital root
8
Palindrome
No
Bit width
14 bits
Reversed
54,431
Recamán's sequence
a(47,385) = 13,445
Square (n²)
180,768,025
Cube (n³)
2,430,426,096,125
Divisor count
4
σ(n) — sum of divisors
16,140
φ(n) — Euler's totient
10,752
Sum of prime factors
2,694

Primality

Prime factorization: 5 × 2689

Nearest primes: 13,441 (−4) · 13,451 (+6)

Divisors & multiples

All divisors (4)
1 · 5 · 2689 · 13445
Aliquot sum (sum of proper divisors): 2,695
Factor pairs (a × b = 13,445)
1 × 13445
5 × 2689
First multiples
13,445 · 26,890 (double) · 40,335 · 53,780 · 67,225 · 80,670 · 94,115 · 107,560 · 121,005 · 134,450

Sums & aliquot sequence

As a sum of two squares: 26² + 113² = 47² + 106²
As consecutive integers: 6,722 + 6,723 2,687 + 2,688 + 2,689 + 2,690 + 2,691 1,340 + 1,341 + … + 1,349
Aliquot sequence: 13,445 2,695 1,409 1 0 — terminates at zero

Representations

In words
thirteen thousand four hundred forty-five
Ordinal
13445th
Binary
11010010000101
Octal
32205
Hexadecimal
0x3485
Base64
NIU=
One's complement
52,090 (16-bit)
In other bases
ternary (3) 200102222
quaternary (4) 3102011
quinary (5) 412240
senary (6) 142125
septenary (7) 54125
nonary (9) 20388
undecimal (11) a113
duodecimal (12) 7945
tridecimal (13) 6173
tetradecimal (14) 4c85
pentadecimal (15) 3eb5

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιγυμεʹ
Mayan (base 20)
𝋡·𝋭·𝋬·𝋥
Chinese
一萬三千四百四十五
Chinese (financial)
壹萬參仟肆佰肆拾伍
In other modern scripts
Eastern Arabic ١٣٤٤٥ Devanagari १३४४५ Bengali ১৩৪৪৫ Tamil ௧௩௪௪௫ Thai ๑๓๔๔๕ Tibetan ༡༣༤༤༥ Khmer ១៣៤៤៥ Lao ໑໓໔໔໕ Burmese ၁၃၄၄၅

Digit at this position in famous constants

π — Pi (π)
Digit 13,445 = 5
e — Euler's number (e)
Digit 13,445 = 0
φ — Golden ratio (φ)
Digit 13,445 = 1
√2 — Pythagoras's (√2)
Digit 13,445 = 0
ln 2 — Natural log of 2
Digit 13,445 = 7
γ — Euler-Mascheroni (γ)
Digit 13,445 = 9

Also seen as

Unicode codepoint
CJK Unified Ideograph-3485
U+3485
Other letter (Lo)

UTF-8 encoding: E3 92 85 (3 bytes).

Hex color
#003485
RGB(0, 52, 133)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.133.

Address
0.0.52.133
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.52.133

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

Position in π

The digit sequence 13445 first appears in π at position 153,116 of the decimal expansion (the 153,116ordinal-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.