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10,921

10,921 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 Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
13
Digit product
0
Digital root
4
Palindrome
No
Bit width
14 bits
Reversed
12,901
Recamán's sequence
a(174,417) = 10,921
Square (n²)
119,268,241
Cube (n³)
1,302,528,459,961
Divisor count
4
σ(n) — sum of divisors
11,152
φ(n) — Euler's totient
10,692
Sum of prime factors
230

Primality

Prime factorization: 67 × 163

Nearest primes: 10,909 (−12) · 10,937 (+16)

Divisors & multiples

All divisors (4)
1 · 67 · 163 · 10921
Aliquot sum (sum of proper divisors): 231
Factor pairs (a × b = 10,921)
1 × 10921
67 × 163
First multiples
10,921 · 21,842 (double) · 32,763 · 43,684 · 54,605 · 65,526 · 76,447 · 87,368 · 98,289 · 109,210

Sums & aliquot sequence

As consecutive integers: 5,460 + 5,461 130 + 131 + … + 196 15 + 16 + … + 148
Aliquot sequence: 10,921 231 153 81 40 50 43 1 0 — terminates at zero

Representations

In words
ten thousand nine hundred twenty-one
Ordinal
10921st
Binary
10101010101001
Octal
25251
Hexadecimal
0x2AA9
Base64
Kqk=
One's complement
54,614 (16-bit)
In other bases
ternary (3) 112222111
quaternary (4) 2222221
quinary (5) 322141
senary (6) 122321
septenary (7) 43561
nonary (9) 15874
undecimal (11) 8229
duodecimal (12) 63a1
tridecimal (13) 4c81
tetradecimal (14) 3da1
pentadecimal (15) 3381

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒁹𒁹 𒁹
Egyptian hieroglyphic
𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
Greek (Milesian)
͵ιϡκαʹ
Mayan (base 20)
𝋡·𝋧·𝋦·𝋡
Chinese
一萬零九百二十一
Chinese (financial)
壹萬零玖佰貳拾壹
In other modern scripts
Eastern Arabic ١٠٩٢١ Devanagari १०९२१ Bengali ১০৯২১ Tamil ௧௦௯௨௧ Thai ๑๐๙๒๑ Tibetan ༡༠༩༢༡ Khmer ១០៩២១ Lao ໑໐໙໒໑ Burmese ၁၀၉၂၁

Digit at this position in famous constants

π — Pi (π)
Digit 10,921 = 2
e — Euler's number (e)
Digit 10,921 = 4
φ — Golden ratio (φ)
Digit 10,921 = 6
√2 — Pythagoras's (√2)
Digit 10,921 = 7
ln 2 — Natural log of 2
Digit 10,921 = 0
γ — Euler-Mascheroni (γ)
Digit 10,921 = 1

Also seen as

Unicode codepoint
Greater-Than Closed By Curve Above Slanted Equal
U+2AA9
Math symbol (Sm)

UTF-8 encoding: E2 AA A9 (3 bytes).

Hex color
#002AA9
RGB(0, 42, 169)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.42.169.

Address
0.0.42.169
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.42.169

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

Position in π

The digit sequence 10921 first appears in π at position 51,083 of the decimal expansion (the 51,083ordinal-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.