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104,640

104,640 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 Harshad / Niven Recamán's Sequence

Properties

Parity
Even
Digit count
6
Digit sum
15
Digital root
6
Palindrome
No
Reversed
46,401
Recamán's sequence
a(91,911) = 104,640
Divisor count
56
σ(n) — sum of divisors
335,280

Primality

Prime factorization: 2 6 × 3 × 5 × 109

Divisors & multiples

All divisors (56)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 12 · 15 · 16 · 20 · 24 · 30 · 32 · 40 · 48 · 60 · 64 · 80 · 96 · 109 · 120 · 160 · 192 · 218 · 240 · 320 · 327 · 436 · 480 · 545 · 654 · 872 · 960 · 1090 · 1308 · 1635 · 1744 · 2180 · 2616 · 3270 · 3488 · 4360 · 5232 · 6540 · 6976 · 8720 · 10464 · 13080 · 17440 · 20928 · 26160 · 34880 · 52320 · 104640
Aliquot sum (sum of proper divisors): 230,640
Factor pairs (a × b = 104,640)
1 × 104640
2 × 52320
3 × 34880
4 × 26160
5 × 20928
6 × 17440
8 × 13080
10 × 10464
12 × 8720
15 × 6976
16 × 6540
20 × 5232
24 × 4360
30 × 3488
32 × 3270
40 × 2616
48 × 2180
60 × 1744
64 × 1635
80 × 1308
96 × 1090
109 × 960
120 × 872
160 × 654
192 × 545
218 × 480
240 × 436
320 × 327
First multiples
104,640 · 209,280 · 313,920 · 418,560 · 523,200 · 627,840 · 732,480 · 837,120 · 941,760 · 1,046,400

Representations

In words
one hundred four thousand six hundred forty
Ordinal
104640th
Binary
11001100011000000
Octal
314300
Hexadecimal
0x198C0
Base64
AZjA

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 104640, here are decompositions:

  • 17 + 104623 = 104640
  • 43 + 104597 = 104640
  • 47 + 104593 = 104640
  • 61 + 104579 = 104640
  • 79 + 104561 = 104640
  • 89 + 104551 = 104640
  • 97 + 104543 = 104640
  • 103 + 104537 = 104640

Showing the first eight; more decompositions exist.

Hex color
#0198C0
RGB(1, 152, 192)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.152.192.

Address
0.1.152.192
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.152.192

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 104,640 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 US104,640 on Google Patents ↗ Look up on USPTO ↗