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16,081

16,081 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 Flippable Odious Number Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
16
Digit product
0
Digital root
7
Palindrome
No
Bit width
14 bits
Reversed
18,061
Flips to (rotate 180°)
18,091
Square (n²)
258,598,561
Cube (n³)
4,158,523,459,441
Divisor count
4
σ(n) — sum of divisors
17,332
φ(n) — Euler's totient
14,832
Sum of prime factors
1,250

Primality

Prime factorization: 13 × 1237

Nearest primes: 16,073 (−8) · 16,087 (+6)

Divisors & multiples

All divisors (4)
1 · 13 · 1237 · 16081
Aliquot sum (sum of proper divisors): 1,251
Factor pairs (a × b = 16,081)
1 × 16081
13 × 1237
First multiples
16,081 · 32,162 (double) · 48,243 · 64,324 · 80,405 · 96,486 · 112,567 · 128,648 · 144,729 · 160,810

Sums & aliquot sequence

As a sum of two squares: 41² + 120² = 84² + 95²
As consecutive integers: 8,040 + 8,041 1,231 + 1,232 + … + 1,243 606 + 607 + … + 631
Aliquot sequence: 16,081 1,251 569 1 0 — terminates at zero

Representations

In words
sixteen thousand eighty-one
Ordinal
16081st
Binary
11111011010001
Octal
37321
Hexadecimal
0x3ED1
Base64
PtE=
One's complement
49,454 (16-bit)
In other bases
ternary (3) 211001121
quaternary (4) 3323101
quinary (5) 1003311
senary (6) 202241
septenary (7) 64612
nonary (9) 24047
undecimal (11) 1109a
duodecimal (12) 9381
tridecimal (13) 7420
tetradecimal (14) 5c09
pentadecimal (15) 4b71

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian)
͵ιϛπαʹ
Mayan (base 20)
𝋢·𝋠·𝋤·𝋡
Chinese
一萬六千零八十一
Chinese (financial)
壹萬陸仟零捌拾壹
In other modern scripts
Eastern Arabic ١٦٠٨١ Devanagari १६०८१ Bengali ১৬০৮১ Tamil ௧௬௦௮௧ Thai ๑๖๐๘๑ Tibetan ༡༦༠༨༡ Khmer ១៦០៨១ Lao ໑໖໐໘໑ Burmese ၁၆၀၈၁

Digit at this position in famous constants

π — Pi (π)
Digit 16,081 = 5
e — Euler's number (e)
Digit 16,081 = 9
φ — Golden ratio (φ)
Digit 16,081 = 2
√2 — Pythagoras's (√2)
Digit 16,081 = 7
ln 2 — Natural log of 2
Digit 16,081 = 3
γ — Euler-Mascheroni (γ)
Digit 16,081 = 2

Also seen as

Unicode codepoint
CJK Unified Ideograph-3Ed1
U+3ED1
Other letter (Lo)

UTF-8 encoding: E3 BB 91 (3 bytes).

Hex color
#003ED1
RGB(0, 62, 209)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.62.209.

Address
0.0.62.209
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.62.209

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

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number
000016081
Federal Reserve
United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.

Position in π

The digit sequence 16081 first appears in π at position 23,093 of the decimal expansion (the 23,093ordinal-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.