138,448
138,448 is a composite number, even.
138,448 (one hundred thirty-eight thousand four hundred forty-eight) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 17 × 509. Its proper divisors sum to 146,132, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21CD0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 3,072
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 844,831
- Recamán's sequence
- a(491,931) = 138,448
- Square (n²)
- 19,167,848,704
- Cube (n³)
- 2,653,750,317,371,392
- Divisor count
- 20
- σ(n) — sum of divisors
- 284,580
- φ(n) — Euler's totient
- 65,024
- Sum of prime factors
- 534
Primality
Prime factorization: 2 4 × 17 × 509
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,448 = [372; (11, 1, 1, 1, 2, 11, 3, 1, 45, 1, 3, 11, 2, 1, 1, 1, 11, 744)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand four hundred forty-eight
- Ordinal
- 138448th
- Binary
- 100001110011010000
- Octal
- 416320
- Hexadecimal
- 0x21CD0
- Base64
- AhzQ
- One's complement
- 4,294,828,847 (32-bit)
- Scientific notation
- 1.38448 × 10⁵
- As a duration
- 138,448 s = 1 day, 14 hours, 27 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληυμηʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋢·𝋨
- Chinese
- 一十三萬八千四百四十八
- Chinese (financial)
- 壹拾參萬捌仟肆佰肆拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138448, here are decompositions:
- 41 + 138407 = 138448
- 47 + 138401 = 138448
- 59 + 138389 = 138448
- 137 + 138311 = 138448
- 197 + 138251 = 138448
- 239 + 138209 = 138448
- 251 + 138197 = 138448
- 257 + 138191 = 138448
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B3 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.208.
- Address
- 0.2.28.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.208
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,448 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138448 first appears in π at position 967,514 of the decimal expansion (the 967,514ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.