Number

144

144 — A Gross

144 is a composite number, even, a calendar year.

One hundred forty-four, also called a gross, is 12 squared and the twelfth Fibonacci number. It is the only Fibonacci number greater than 1 that is also a perfect square.

Sources https://en.wikipedia.org/wiki/144_(number)

Abundant Number Curated Fibonacci Harshad / Niven Perfect Square Powerful Number

Properties

Parity: Even
Digit count: 3
Digit sum: 9
Digital root: 9
Palindrome: No
Divisor count: 15
σ(n) — sum of divisors: 403

Primality

Prime factorization: 2 ⁴ × 3 ²

Divisors & multiples

All divisors (15)

1 · 2 · 3 · 4 · 6 · 8 · 9 · 12 · 16 · 18 · 24 · 36 · 48 · 72 · 144

Aliquot sum (sum of proper divisors): 259

Factor pairs (a × b = 144)

1 × 144

2 × 72

3 × 48

4 × 36

6 × 24

8 × 18

9 × 16

12 × 12

First multiples

144 · 288 · 432 · 576 · 720 · 864 · 1,008 · 1,152 · 1,296 · 1,440

Representations

In words: one hundred forty-four
Ordinal: 144th
Roman numeral: CXLIV
Binary: 10010000
Octal: 220
Hexadecimal: 90

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 144, here are decompositions:

5 + 139 = 144
7 + 137 = 144
13 + 131 = 144
17 + 127 = 144
31 + 113 = 144
37 + 107 = 144
41 + 103 = 144
43 + 101 = 144

Showing the first eight; more decompositions exist.

Unicode codepoint

U+0090

Control character (Cc)

UTF-8 encoding: C2 90 (2 bytes).

Lookup U+0090 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000090

RGB(0, 0, 144)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.144.