738
Alloy 738 is a cast superalloy for hot gas path components.
- Even
- Composite
Where 738 fits
Why 738 is special
Blades made from it are grown as a single crystal in some applications, which removes the grain boundaries that creep would otherwise exploit.
Factors & digit properties
- Divisors (12)
- 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738
- Prime factorisation
- 2 × 3^2 × 41
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 738
- Scientific notation
- 7.380 × 10^2
Roman numerals
D C C X X X V I I I
Binary
1 0 1 1 1 0 0 0 1 0
1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 738
Octal
1 3 4 2
1 × 512 + 3 × 64 + 4 × 8 + 2 × 1 = 738
Hexadecimal
2 e 2
2 × 256 + e × 16 + 2 × 1 = 738
Read as powers of two: 512 + 128 + 64 + 32 + 2 = 738.
In historical numeral systems
Egyptian
7 coils of rope, 3 hobbles, 8 strokes
7 × 100 + 3 × 10 + 8 × 1 = 738. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 2 vertical wedges (sixties place), 1 corner wedge + 8 vertical wedges (units place)
12 × 60 + 18 = 738. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
psi, then lambda, then eta, marked as a numeral
psi-lambda-eta + keraia
psi + lambda + eta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then shin, then lamed, then het
tav-shin-lamed-het
tav (400) + shin (300) + lamed (30) + het (8) = 738, written in descending order.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Both are cast nickel superalloys for turbine hot sections, where the geometry cannot be machined from bar.
View 713 →Cast blades and forged discs are the two halves of a turbine stage, made from different superalloys for different loads.
View 718 →Technology & computing
Alloy 738 is a cast nickel-base superalloy for gas turbine blades and vanes. Directional solidification and single-crystal casting eliminate transverse grain boundaries that limit creep life.
DocumentedTechnology & computingGeography: International — AISI, SAE and Aluminium Association designations
Common questions
Is 738 a prime number?
No, 738 is not prime.
What are the factors of 738?
The factors of 738 are 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738.
What is 738 in Roman numerals?
738 in Roman numerals is DCCXXXVIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026