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20,973

20,973 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.).

20,973 (twenty thousand nine hundred seventy-three) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 3 × 6,991. Written other ways, in hexadecimal, 0x51ED.

Arithmetic Number Cube-Free Deficient Number Odious Number Recamán's Sequence Semiprime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
5
Digit sum
21
Digit product
0
Digital root
3
Palindrome
No
Bit width
15 bits
Reversed
37,902
Recamán's sequence
a(41,893) = 20,973
Square (n²)
439,866,729
Cube (n³)
9,225,324,907,317
Divisor count
4
σ(n) — sum of divisors
27,968
φ(n) — Euler's totient
13,980
Sum of prime factors
6,994

Primality

Prime factorization: 3 × 6991

Nearest primes: 20,963 (−10) · 20,981 (+8)

Divisors & multiples

All divisors (4)
1 · 3 · 6991 · 20973
Aliquot sum (sum of proper divisors): 6,995
Factor pairs (a × b = 20,973)
1 × 20973
3 × 6991
First multiples
20,973 · 41,946 (double) · 62,919 · 83,892 · 104,865 · 125,838 · 146,811 · 167,784 · 188,757 · 209,730

Sums & aliquot sequence

As consecutive integers: 10,486 + 10,487 6,990 + 6,991 + 6,992 3,493 + 3,494 + 3,495 + 3,496 + 3,497 + 3,498
Aliquot sequence: 20,973 6,995 1,405 287 49 8 7 1 0 — terminates at zero

Continued fraction of √n

√20,973 = [144; (1, 4, 1, 1, 2, 1, 9, 3, 1, 2, 2, 2, 1, 9, 1, 1, 1, 3, 96, 3, 1, 1, 1, 9, …)]

Period length 38 — the block in parentheses repeats forever.

Representations

In words
twenty thousand nine hundred seventy-three
Ordinal
20973rd
Binary
101000111101101
Octal
50755
Hexadecimal
0x51ED
Base64
Ue0=
One's complement
44,562 (16-bit)
Scientific notation
2.0973 × 10⁴
As a duration
20,973 s = 5 hours, 49 minutes, 33 seconds
In other bases
ternary (3) 1001202210
quaternary (4) 11013231
quinary (5) 1132343
senary (6) 241033
septenary (7) 115101
nonary (9) 31683
undecimal (11) 14837
duodecimal (12) 10179
tridecimal (13) 9714
tetradecimal (14) 7901
pentadecimal (15) 6333

As an angle

20,973° = 58 × 360° + 93°
93° ≈ 1.623 rad
Compass bearing: E (east)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian)
͵κϡογʹ
Mayan (base 20)
𝋢·𝋬·𝋨·𝋭
Chinese
二萬零九百七十三
Chinese (financial)
貳萬零玖佰柒拾參
In other modern scripts
Eastern Arabic ٢٠٩٧٣ Devanagari २०९७३ Bengali ২০৯৭৩ Tamil ௨௦௯௭௩ Thai ๒๐๙๗๓ Tibetan ༢༠༩༧༣ Khmer ២០៩៧៣ Lao ໒໐໙໗໓ Burmese ၂၀၉၇၃

Digit at this position in famous constants

π — Pi (π)
Digit 20,973 = 8
e — Euler's number (e)
Digit 20,973 = 4
φ — Golden ratio (φ)
Digit 20,973 = 8
√2 — Pythagoras's (√2)
Digit 20,973 = 5
ln 2 — Natural log of 2
Digit 20,973 = 4
γ — Euler-Mascheroni (γ)
Digit 20,973 = 9

Also seen as

Unicode codepoint
CJK Unified Ideograph-51Ed
U+51ED
Other letter (Lo)

UTF-8 encoding: E5 87 AD (3 bytes).

Hex color
#0051ED
RGB(0, 81, 237)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.81.237.

Address
0.0.81.237
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.81.237

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

Position in π

The digit sequence 20973 first appears in π at position 68,384 of the decimal expansion (the 68,384ordinal-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.

Related reading

  • Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.