number.wiki
Number

465

465 is a composite number, odd, a calendar year.

Deficient Number Harshad / Niven Sphenic Number Squarefree Triangular Year

Properties

Parity
Odd
Digit count
3
Digit sum
15
Digital root
6
Palindrome
No
Divisor count
8
σ(n) — sum of divisors
768

Primality

Prime factorization: 3 × 5 × 31

Divisors & multiples

All divisors (8)
1 · 3 · 5 · 15 · 31 · 93 · 155 · 465
Aliquot sum (sum of proper divisors): 303
Factor pairs (a × b = 465)
1 × 465
3 × 155
5 × 93
15 × 31
First multiples
465 · 930 · 1,395 · 1,860 · 2,325 · 2,790 · 3,255 · 3,720 · 4,185 · 4,650

Representations

In words
four hundred sixty-five
Ordinal
465th
Roman numeral
CDLXV
Binary
111010001
Octal
721
Hexadecimal
1D1

Also seen as

Unicode codepoint
Ǒ
U+01D1
Uppercase letter (Lu)

UTF-8 encoding: C7 91 (2 bytes).

Network port

TCP/UDP port 465 is the well-known port for SMTPS — SMTP over TLS.

Hex color
#0001D1
RGB(0, 1, 209)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.209.