Number

74

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

Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 74 AD

Calendar year

AD 74 (LXXIV) was a common year starting on Saturday of the Julian calendar.

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Historical context — 74 BC

Calendar year

Year 74 BC was a 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, 74
Ended on: Monday
December 31, 74
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 70s
70–79
Century: 1st century
1–100
Millennium: 1st millennium
1–1000
Years ago: 1,952
1952 years before 2026.

In other calendars

Hebrew: 3834 / 3835 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Dog
Sexagenary cycle position 11 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 617 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 66 / 67 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): -4 / -5 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 2
Digit sum: 11
Digit product: 28
Digital root: 2
Palindrome: No
Bit width: 7 bits
Reversed: 47
Recamán's sequence: a(79) = 74
Square (n²): 5,476
Cube (n³): 405,224
Divisor count: 4
σ(n) — sum of divisors: 114
φ(n) — Euler's totient: 36
Sum of prime factors: 39

Primality

Prime factorization: 2 × 37

Nearest primes: 73 (−1) · 79 (+5)

Divisors & multiples

All divisors (4)

1 · 2 · 37 (half) · 74

Aliquot sum (sum of proper divisors): 40

Factor pairs (a × b = 74)

1 × 74

2 × 37

First multiples

74 · 148 (double) · 222 · 296 · 370 · 444 · 518 · 592 · 666 · 740

Sums & aliquot sequence

As a sum of two squares: 5² + 7²

As consecutive integers: 17 + 18 + 19 + 20

Aliquot sequence: 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Representations

In words: seventy-four
Ordinal: 74th
Roman numeral: LXXIV
Binary: 1001010
Octal: 112
Hexadecimal: 0x4A
Base64: Sg==
One's complement: 181 (8-bit)
Scientific notation: 7.4 × 10¹

In other bases

ternary (3) 2202

quaternary (4) 1022

quinary (5) 244

senary (6) 202

septenary (7) 134

nonary (9) 82

undecimal (11) 68

duodecimal (12) 62

tridecimal (13) 59

tetradecimal (14) 54

pentadecimal (15) 4e

Palindromic in base 6

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian): οδʹ
Mayan (base 20): 𝋣·𝋮
Chinese: 七十四
Chinese (financial): 柒拾肆

In other modern scripts

Eastern Arabic ٧٤ Devanagari ७४ Bengali ৭৪ Tamil ௭௪ Thai ๗๔ Tibetan ༧༤ Khmer ៧៤ Lao ໗໔ Burmese ၇၄

Digit at this position in famous constants

π — Pi (π): Digit 74 = 2
e — Euler's number (e): Digit 74 = 3
φ — Golden ratio (φ): Digit 74 = 8
√2 — Pythagoras's (√2): Digit 74 = 4
ln 2 — Natural log of 2: Digit 74 = 9
γ — Euler-Mascheroni (γ): Digit 74 = 7

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 74, here are decompositions:

3 + 71 = 74
7 + 67 = 74
13 + 61 = 74
31 + 43 = 74
37 + 37 = 74

ASCII character

As an ASCII codepoint, 74 is J. Printable ASCII character J.

Hex color

#00004A

RGB(0, 0, 74)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.74.

Address: 0.0.0.74
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.74

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

US numbered highway

Matches numbered highway designation:

I-74 — Davenport, IA to Cincinnati, OH (and a separate eastern segment).

Interstate 74 on Wikipedia ↗