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100,800

100,800 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 Flippable Harshad / Niven Recamán's Sequence

Properties

Parity
Even
Digit count
6
Digit sum
9
Digital root
9
Palindrome
No
Reversed
8,001
Flips to (rotate 180°)
8,001
Recamán's sequence
a(255,116) = 100,800
Divisor count
126
σ(n) — sum of divisors
409,448

Primality

Prime factorization: 2 6 × 3 2 × 5 2 × 7

Divisors & multiples

All divisors (126)
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 12 · 14 · 15 · 16 · 18 · 20 · 21 · 24 · 25 · 28 · 30 · 32 · 35 · 36 · 40 · 42 · 45 · 48 · 50 · 56 · 60 · 63 · 64 · 70 · 72 · 75 · 80 · 84 · 90 · 96 · 100 · 105 · 112 · 120 · 126 · 140 · 144 · 150 · 160 · 168 · 175 · 180 · 192 · 200 · 210 · 224 · 225 · 240 · 252 · 280 · 288 · 300 · 315 · 320 · 336 · 350 · 360 · 400 · 420 · 448 · 450 · 480 · 504 · 525 · 560 · 576 · 600 · 630 · 672 · 700 · 720 · 800 · 840 · 900 · 960 · 1008 · 1050 · 1120 · 1200 · 1260 · 1344 · 1400 · 1440 · 1575 · 1600 · 1680 · 1800 · 2016 · 2100 · 2240 · 2400 · 2520 · 2800 · 2880 · 3150 · 3360 · 3600 · 4032 · 4200 · 4800 · 5040 · 5600 · 6300 · 6720 · 7200 · 8400 · 10080 · 11200 · 12600 · 14400 · 16800 · 20160 · 25200 · 33600 · 50400 · 100800
Aliquot sum (sum of proper divisors): 308,648
Factor pairs (a × b = 100,800)
1 × 100800
2 × 50400
3 × 33600
4 × 25200
5 × 20160
6 × 16800
7 × 14400
8 × 12600
9 × 11200
10 × 10080
12 × 8400
14 × 7200
15 × 6720
16 × 6300
18 × 5600
20 × 5040
21 × 4800
24 × 4200
25 × 4032
28 × 3600
30 × 3360
32 × 3150
35 × 2880
36 × 2800
40 × 2520
42 × 2400
45 × 2240
48 × 2100
50 × 2016
56 × 1800
60 × 1680
63 × 1600
64 × 1575
70 × 1440
72 × 1400
75 × 1344
80 × 1260
84 × 1200
90 × 1120
96 × 1050
100 × 1008
105 × 960
112 × 900
120 × 840
126 × 800
140 × 720
144 × 700
150 × 672
160 × 630
168 × 600
175 × 576
180 × 560
192 × 525
200 × 504
210 × 480
224 × 450
225 × 448
240 × 420
252 × 400
280 × 360
288 × 350
300 × 336
315 × 320
First multiples
100,800 · 201,600 · 302,400 · 403,200 · 504,000 · 604,800 · 705,600 · 806,400 · 907,200 · 1,008,000

Representations

In words
one hundred thousand eight hundred
Ordinal
100800th
Binary
11000100111000000
Octal
304700
Hexadecimal
0x189C0
Base64
AYnA

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 100800, here are decompositions:

  • 13 + 100787 = 100800
  • 31 + 100769 = 100800
  • 53 + 100747 = 100800
  • 59 + 100741 = 100800
  • 67 + 100733 = 100800
  • 97 + 100703 = 100800
  • 101 + 100699 = 100800
  • 107 + 100693 = 100800

Showing the first eight; more decompositions exist.

Unicode codepoint
𘧀
Tangut Component-449
U+189C0
Other letter (Lo)

UTF-8 encoding: F0 98 A7 80 (4 bytes).

Lookup U+189C0 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0189C0
RGB(1, 137, 192)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.137.192.

Address
0.1.137.192
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.137.192

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 100,800 and was likely granted around 1870.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US100,800 on Google Patents ↗ Look up on USPTO ↗