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9,800

9,800 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 Achilles Number Powerful Number

Properties

Parity
Even
Digit count
4
Digit sum
17
Digital root
8
Palindrome
No
Divisor count
36
σ(n) — sum of divisors
26,505

Primality

Prime factorization: 2 3 × 5 2 × 7 2

Divisors & multiples

All divisors (36)
1 · 2 · 4 · 5 · 7 · 8 · 10 · 14 · 20 · 25 · 28 · 35 · 40 · 49 · 50 · 56 · 70 · 98 · 100 · 140 · 175 · 196 · 200 · 245 · 280 · 350 · 392 · 490 · 700 · 980 · 1225 · 1400 · 1960 · 2450 · 4900 · 9800
Aliquot sum (sum of proper divisors): 16,705
Factor pairs (a × b = 9,800)
1 × 9800
2 × 4900
4 × 2450
5 × 1960
7 × 1400
8 × 1225
10 × 980
14 × 700
20 × 490
25 × 392
28 × 350
35 × 280
40 × 245
49 × 200
50 × 196
56 × 175
70 × 140
98 × 100
First multiples
9,800 · 19,600 · 29,400 · 39,200 · 49,000 · 58,800 · 68,600 · 78,400 · 88,200 · 98,000

Representations

In words
nine thousand eight hundred
Ordinal
9800th
Binary
10011001001000
Octal
23110
Hexadecimal
2648

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 9800, here are decompositions:

  • 13 + 9787 = 9800
  • 19 + 9781 = 9800
  • 31 + 9769 = 9800
  • 61 + 9739 = 9800
  • 67 + 9733 = 9800
  • 79 + 9721 = 9800
  • 103 + 9697 = 9800
  • 139 + 9661 = 9800

Showing the first eight; more decompositions exist.

Unicode codepoint
U+2648
Other symbol (So)

UTF-8 encoding: E2 99 88 (3 bytes).

Hex color
#002648
RGB(0, 38, 72)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.38.72.