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8,160

8,160 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.).
Abundant Number Arithmetic Number Evil Number Flippable Gapful Number Harshad / Niven Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
4
Digit sum
15
Digit product
0
Digital root
6
Palindrome
No
Bit width
13 bits
Reversed
618
Flips to (rotate 180°)
918
Recamán's sequence
a(10,447) = 8,160
Square (n²)
66,585,600
Cube (n³)
543,338,496,000
Divisor count
48
σ(n) — sum of divisors
27,216
φ(n) — Euler's totient
2,048
Sum of prime factors
35

Primality

Prime factorization: 2 5 × 3 × 5 × 17

Nearest primes: 8,147 (−13) · 8,161 (+1)

Divisors & multiples

All divisors (48)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 12 · 15 · 16 · 17 · 20 · 24 · 30 · 32 · 34 · 40 · 48 · 51 · 60 · 68 · 80 · 85 · 96 · 102 · 120 · 136 · 160 · 170 · 204 · 240 · 255 · 272 · 340 · 408 · 480 · 510 · 544 · 680 · 816 · 1020 · 1360 · 1632 · 2040 · 2720 · 4080 (half) · 8160
Aliquot sum (sum of proper divisors): 19,056
Factor pairs (a × b = 8,160)
1 × 8160
2 × 4080
3 × 2720
4 × 2040
5 × 1632
6 × 1360
8 × 1020
10 × 816
12 × 680
15 × 544
16 × 510
17 × 480
20 × 408
24 × 340
30 × 272
32 × 255
34 × 240
40 × 204
48 × 170
51 × 160
60 × 136
68 × 120
80 × 102
85 × 96
First multiples
8,160 · 16,320 (double) · 24,480 · 32,640 · 40,800 · 48,960 · 57,120 · 65,280 · 73,440 · 81,600

Sums & aliquot sequence

As consecutive integers: 2,719 + 2,720 + 2,721 1,630 + 1,631 + 1,632 + 1,633 + 1,634 537 + 538 + … + 551 472 + 473 + … + 488
Aliquot sequence: 8,160 19,056 30,296 34,744 32,576 32,194 16,100 25,564 30,884 30,940 53,732 60,508 60,564 105,420 233,268 389,004 745,332 — unresolved within range

Representations

In words
eight thousand one hundred sixty
Ordinal
8160th
Binary
1111111100000
Octal
17740
Hexadecimal
0x1FE0
Base64
H+A=
One's complement
57,375 (16-bit)
In other bases
ternary (3) 102012020
quaternary (4) 1333200
quinary (5) 230120
senary (6) 101440
septenary (7) 32535
nonary (9) 12166
undecimal (11) 6149
duodecimal (12) 4880
tridecimal (13) 3939
tetradecimal (14) 2d8c
pentadecimal (15) 2640

Historical numeral systems

Babylonian (base 60)
𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 ·
Egyptian hieroglyphic
𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian)
͵ηρξʹ
Mayan (base 20)
𝋡·𝋠·𝋨·𝋠
Chinese
八千一百六十
Chinese (financial)
捌仟壹佰陸拾
In other modern scripts
Eastern Arabic ٨١٦٠ Devanagari ८१६० Bengali ৮১৬০ Tamil ௮௧௬௦ Thai ๘๑๖๐ Tibetan ༨༡༦༠ Khmer ៨១៦០ Lao ໘໑໖໐ Burmese ၈၁၆၀

Digit at this position in famous constants

π — Pi (π)
Digit 8,160 = 0
e — Euler's number (e)
Digit 8,160 = 5
φ — Golden ratio (φ)
Digit 8,160 = 7
√2 — Pythagoras's (√2)
Digit 8,160 = 4
ln 2 — Natural log of 2
Digit 8,160 = 5
γ — Euler-Mascheroni (γ)
Digit 8,160 = 6

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8160, here are decompositions:

  • 13 + 8147 = 8160
  • 37 + 8123 = 8160
  • 43 + 8117 = 8160
  • 59 + 8101 = 8160
  • 67 + 8093 = 8160
  • 71 + 8089 = 8160
  • 73 + 8087 = 8160
  • 79 + 8081 = 8160

Showing the first eight; more decompositions exist.

Unicode codepoint
Greek Small Letter Upsilon With Vrachy
U+1FE0
Lowercase letter (Ll)

UTF-8 encoding: E1 BF A0 (3 bytes).

Hex color
#001FE0
RGB(0, 31, 224)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.31.224.

Address
0.0.31.224
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.31.224

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

Position in π

The digit sequence 8160 first appears in π at position 790 of the decimal expansion (the 790ordinal-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.