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13,845

13,845 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 Gapful Number Odious Number Pernicious Number Recamán's Sequence Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
21
Digit product
480
Digital root
3
Palindrome
No
Bit width
14 bits
Reversed
54,831
Recamán's sequence
a(21,026) = 13,845
Square (n²)
191,684,025
Cube (n³)
2,653,865,326,125
Divisor count
16
σ(n) — sum of divisors
24,192
φ(n) — Euler's totient
6,720
Sum of prime factors
92

Primality

Prime factorization: 3 × 5 × 13 × 71

Nearest primes: 13,841 (−4) · 13,859 (+14)

Divisors & multiples

All divisors (16)
1 · 3 · 5 · 13 · 15 · 39 · 65 · 71 · 195 · 213 · 355 · 923 · 1065 · 2769 · 4615 · 13845
Aliquot sum (sum of proper divisors): 10,347
Factor pairs (a × b = 13,845)
1 × 13845
3 × 4615
5 × 2769
13 × 1065
15 × 923
39 × 355
65 × 213
71 × 195
First multiples
13,845 · 27,690 (double) · 41,535 · 55,380 · 69,225 · 83,070 · 96,915 · 110,760 · 124,605 · 138,450

Sums & aliquot sequence

As consecutive integers: 6,922 + 6,923 4,614 + 4,615 + 4,616 2,767 + 2,768 + 2,769 + 2,770 + 2,771 2,305 + 2,306 + 2,307 + 2,308 + 2,309 + 2,310
Aliquot sequence: 13,845 10,347 3,453 1,155 1,149 387 185 43 1 0 — terminates at zero

Representations

In words
thirteen thousand eight hundred forty-five
Ordinal
13845th
Binary
11011000010101
Octal
33025
Hexadecimal
0x3615
Base64
NhU=
One's complement
51,690 (16-bit)
In other bases
ternary (3) 200222210
quaternary (4) 3120111
quinary (5) 420340
senary (6) 144033
septenary (7) 55236
nonary (9) 20883
undecimal (11) a447
duodecimal (12) 8019
tridecimal (13) 63c0
tetradecimal (14) 508d
pentadecimal (15) 4180

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιγωμεʹ
Mayan (base 20)
𝋡·𝋮·𝋬·𝋥
Chinese
一萬三千八百四十五
Chinese (financial)
壹萬參仟捌佰肆拾伍
In other modern scripts
Eastern Arabic ١٣٨٤٥ Devanagari १३८४५ Bengali ১৩৮৪৫ Tamil ௧௩௮௪௫ Thai ๑๓๘๔๕ Tibetan ༡༣༨༤༥ Khmer ១៣៨៤៥ Lao ໑໓໘໔໕ Burmese ၁၃၈၄၅

Digit at this position in famous constants

π — Pi (π)
Digit 13,845 = 9
e — Euler's number (e)
Digit 13,845 = 7
φ — Golden ratio (φ)
Digit 13,845 = 4
√2 — Pythagoras's (√2)
Digit 13,845 = 0
ln 2 — Natural log of 2
Digit 13,845 = 8
γ — Euler-Mascheroni (γ)
Digit 13,845 = 3

Also seen as

Unicode codepoint
CJK Unified Ideograph-3615
U+3615
Other letter (Lo)

UTF-8 encoding: E3 98 95 (3 bytes).

Hex color
#003615
RGB(0, 54, 21)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.21.

Address
0.0.54.21
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.54.21

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

Position in π

The digit sequence 13845 first appears in π at position 24,773 of the decimal expansion (the 24,773ordinal-suffix:rd 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.