number.wiki
Number

1,400

1,400 is a composite number, even, a calendar year.

Abundant Number Harshad / Niven Year

Properties

Parity
Even
Digit count
4
Digit sum
5
Digital root
5
Palindrome
No
Divisor count
24
σ(n) — sum of divisors
3,720

Primality

Prime factorization: 2 3 × 5 2 × 7

Divisors & multiples

All divisors (24)
1 · 2 · 4 · 5 · 7 · 8 · 10 · 14 · 20 · 25 · 28 · 35 · 40 · 50 · 56 · 70 · 100 · 140 · 175 · 200 · 280 · 350 · 700 · 1400
Aliquot sum (sum of proper divisors): 2,320
Factor pairs (a × b = 1,400)
1 × 1400
2 × 700
4 × 350
5 × 280
7 × 200
8 × 175
10 × 140
14 × 100
20 × 70
25 × 56
28 × 50
35 × 40
First multiples
1,400 · 2,800 · 4,200 · 5,600 · 7,000 · 8,400 · 9,800 · 11,200 · 12,600 · 14,000

Representations

In words
one thousand four hundred
Ordinal
1400th
Roman numeral
MCD
Binary
10101111000
Octal
2570
Hexadecimal
578

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1400, here are decompositions:

  • 19 + 1381 = 1400
  • 73 + 1327 = 1400
  • 79 + 1321 = 1400
  • 97 + 1303 = 1400
  • 103 + 1297 = 1400
  • 109 + 1291 = 1400
  • 151 + 1249 = 1400
  • 163 + 1237 = 1400

Showing the first eight; more decompositions exist.

Unicode codepoint
ո
U+0578
Lowercase letter (Ll)

UTF-8 encoding: D5 B8 (2 bytes).

Lookup U+0578 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000578
RGB(0, 5, 120)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.120.