Number

46

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

Arithmetic Number Deficient Number Evil Number Nonagonal Recamán's Sequence Semiprime Squarefree Year

Historical context — 46 AD

Calendar year

AD 46 (XLVI) was a common year starting on Saturday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Historical context — 46 BC

Calendar year

Year 46 BC was the last year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Monday
January 1, 46
Ended on: Monday
December 31, 46
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 40s
40–49
Century: 1st century
1–100
Millennium: 1st millennium
1–1000
Years ago: 1,980
1980 years before 2026.

In other calendars

Hebrew: 3806 / 3807 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Horse
Sexagenary cycle position 43 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 589 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 38 / 39 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): -32 / -33 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 2
Digit sum: 10
Digit product: 24
Digital root: 1
Palindrome: No
Bit width: 6 bits
Reversed: 64
Recamán's sequence: a(32) = 46
Square (n²): 2,116
Cube (n³): 97,336
Divisor count: 4
σ(n) — sum of divisors: 72
φ(n) — Euler's totient: 22
Sum of prime factors: 25

Primality

Prime factorization: 2 × 23

Nearest primes: 43 (−3) · 47 (+1)

Divisors & multiples

All divisors (4)

1 · 2 · 23 (half) · 46

Aliquot sum (sum of proper divisors): 26

Factor pairs (a × b = 46)

1 × 46

2 × 23

First multiples

46 · 92 (double) · 138 · 184 · 230 · 276 · 322 · 368 · 414 · 460

Sums & aliquot sequence

As consecutive integers: 10 + 11 + 12 + 13

Aliquot sequence: 46 → 26 → 16 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Representations

In words: forty-six
Ordinal: 46th
Roman numeral: XLVI
Binary: 101110
Octal: 56
Hexadecimal: 0x2E
Base64: Lg==
One's complement: 209 (8-bit)
Scientific notation: 4.6 × 10¹

In other bases

ternary (3) 1201

quaternary (4) 232

quinary (5) 141

senary (6) 114

septenary (7) 64

nonary (9) 51

undecimal (11) 42

duodecimal (12) 3a

tridecimal (13) 37

tetradecimal (14) 34

pentadecimal (15) 31

Palindromic in base 4, base 5

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): μϛʹ
Mayan (base 20): 𝋢·𝋦
Chinese: 四十六
Chinese (financial): 肆拾陸

In other modern scripts

Eastern Arabic ٤٦ Devanagari ४६ Bengali ৪৬ Tamil ௪௬ Thai ๔๖ Tibetan ༤༦ Khmer ៤៦ Lao ໔໖ Burmese ၄၆

Digit at this position in famous constants

π — Pi (π): Digit 46 = 9
e — Euler's number (e): Digit 46 = 3
φ — Golden ratio (φ): Digit 46 = 9
√2 — Pythagoras's (√2): Digit 46 = 5
ln 2 — Natural log of 2: Digit 46 = 4
γ — Euler-Mascheroni (γ): Digit 46 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 46, here are decompositions:

3 + 43 = 46
5 + 41 = 46
17 + 29 = 46
23 + 23 = 46

ASCII character

As an ASCII codepoint, 46 is .. Printable ASCII character ..

Hex color

#00002E

RGB(0, 0, 46)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.46.

Address: 0.0.0.46
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.46

Unspecified address (0.0.0.0/8) — "this network" placeholder.