Live analysis

80,000

80,000 is a composite number, even.

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.).

80,000 (eighty thousand) is an even 5-digit number. It is a composite number with 40 divisors, and factors as 2⁷ × 5⁴. Its proper divisors sum to 119,155, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x13880.

Abundant Number Achilles Number Flippable Frugal Number Gapful Number Harshad / Niven Odious Number Pernicious Number Powerful Number Practical Number Recamán's Sequence Refactorable Number Self Number Semiperfect Number

Interestingness

★ ★ ★ ★ ★

11 notable facts · grade A

79,988 79,989 79,990 79,991 79,992 79,993 79,994 79,995 79,996 79,997 79,998 79,999 80,000 80,001 80,002 80,003 80,004 80,005 80,006 80,007 80,008 80,009 80,010 80,011 80,012

less more

Properties

Parity: Even
Digit count: 5
Digit sum: 8
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 17 bits
Reversed: 8
Flips to (rotate 180°): 8
Recamán's sequence: a(120,107) = 80,000
Square (n²): 6,400,000,000
Cube (n³): 512,000,000,000,000
Divisor count: 40
σ(n) — sum of divisors: 199,155
φ(n) — Euler's totient: 32,000
Sum of prime factors: 34

Primality

Prime factorization: 2 ⁷ × 5 ⁴

Nearest primes: 79,999 (−1) · 80,021 (+21)

Divisors & multiples

All divisors (40)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 25 · 32 · 40 · 50 · 64 · 80 · 100 · 125 · 128 · 160 · 200 · 250 · 320 · 400 · 500 · 625 · 640 · 800 · 1000 · 1250 · 1600 · 2000 · 2500 · 3200 · 4000 · 5000 · 8000 · 10000 · 16000 · 20000 · 40000 (half) · 80000

Aliquot sum (sum of proper divisors): 119,155

Factor pairs (a × b = 80,000)

1 × 80000

2 × 40000

4 × 20000

5 × 16000

8 × 10000

10 × 8000

16 × 5000

20 × 4000

25 × 3200

32 × 2500

40 × 2000

50 × 1600

64 × 1250

80 × 1000

100 × 800

125 × 640

128 × 625

160 × 500

200 × 400

250 × 320

First multiples

80,000 · 160,000 (double) · 240,000 · 320,000 · 400,000 · 480,000 · 560,000 · 640,000 · 720,000 · 800,000

Sums & aliquot sequence

As a sum of two squares: 40² + 280² = 136² + 248² = 200² + 200²

As consecutive integers: 15,998 + 15,999 + 16,000 + 16,001 + 16,002 3,188 + 3,189 + … + 3,212 578 + 579 + … + 702 185 + 186 + … + 440

Aliquot sequence: 80,000 → 119,155 → 23,837 → 2,497 → 239 → 1 → 0 — terminates at zero

Continued fraction of √n

√80,000 = [282; (1, 5, 2, 1, 3, 1, 7, 5, 1, 1, 8, 3, 2, 1, 1, 10, 1, 21, 1, 2, 2, 34, 1, 12, …)]

Representations

In words: eighty thousand
Ordinal: 80000th
Binary: 10011100010000000
Octal: 234200
Hexadecimal: 0x13880
Base64: ATiA
One's complement: 4,294,887,295 (32-bit)
Scientific notation: 8 × 10⁴
As a duration: 80,000 s = 22 hours, 13 minutes, 20 seconds

In other bases

ternary (3) 11001201222

quaternary (4) 103202000

quinary (5) 10030000

senary (6) 1414212

septenary (7) 452144

nonary (9) 131658

undecimal (11) 55118

duodecimal (12) 3a368

tridecimal (13) 2a54b

tetradecimal (14) 21224

pentadecimal (15) 18a85

As an angle

80,000° = 222 × 360° + 80°

80° ≈ 1.396 rad

Compass bearing: E (east)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍
Greek (Milesian): ͵π
Mayan (base 20): 𝋪·𝋠·𝋠·𝋠
Chinese: 八萬
Chinese (financial): 捌萬

In other modern scripts

Eastern Arabic ٨٠٠٠٠ Devanagari ८०००० Bengali ৮০০০০ Tamil ௮௦௦௦௦ Thai ๘๐๐๐๐ Tibetan ༨༠༠༠༠ Khmer ៨០០០០ Lao ໘໐໐໐໐ Burmese ၈၀၀၀၀

Digit at this position in famous constants

π — Pi (π): Digit 80,000 = 0
e — Euler's number (e): Digit 80,000 = 9
φ — Golden ratio (φ): Digit 80,000 = 7
√2 — Pythagoras's (√2): Digit 80,000 = 3
ln 2 — Natural log of 2: Digit 80,000 = 4
γ — Euler-Mascheroni (γ): Digit 80,000 = 8

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 80000, here are decompositions:

3 + 79997 = 80000
13 + 79987 = 80000
61 + 79939 = 80000
97 + 79903 = 80000
127 + 79873 = 80000
139 + 79861 = 80000
157 + 79843 = 80000
199 + 79801 = 80000

Showing the first eight; more decompositions exist.

Unicode codepoint

𓢀

Egyptian Hieroglyph-13880

U+13880

Other letter (Lo)

UTF-8 encoding: F0 93 A2 80 (4 bytes).

Lookup U+13880 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#013880

RGB(1, 56, 128)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.56.128.

Address: 0.1.56.128
Class: reserved
IPv4-mapped IPv6: ::ffff:0.1.56.128

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

Position in π

The digit sequence 80000 first appears in π at position 17,533 of the decimal expansion (the 17,533ordinal-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.

Look up 80000 on Pi Search ↗