138,446
138,446 is a composite number, even.
138,446 (one hundred thirty-eight thousand four hundred forty-six) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 7 × 11 × 29 × 31. Written other ways, in hexadecimal, 0x21CCE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 2,304
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 644,831
- Recamán's sequence
- a(491,935) = 138,446
- Square (n²)
- 19,167,294,916
- Cube (n³)
- 2,653,635,311,940,536
- Divisor count
- 32
- σ(n) — sum of divisors
- 276,480
- φ(n) — Euler's totient
- 50,400
- Sum of prime factors
- 80
Primality
Prime factorization: 2 × 7 × 11 × 29 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,446 = [372; (12, 744)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand four hundred forty-six
- Ordinal
- 138446th
- Binary
- 100001110011001110
- Octal
- 416316
- Hexadecimal
- 0x21CCE
- Base64
- AhzO
- One's complement
- 4,294,828,849 (32-bit)
- Scientific notation
- 1.38446 × 10⁵
- As a duration
- 138,446 s = 1 day, 14 hours, 27 minutes, 26 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληυμϛʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋢·𝋦
- Chinese
- 一十三萬八千四百四十六
- Chinese (financial)
- 壹拾參萬捌仟肆佰肆拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138446, here are decompositions:
- 13 + 138433 = 138446
- 19 + 138427 = 138446
- 43 + 138403 = 138446
- 73 + 138373 = 138446
- 97 + 138349 = 138446
- 109 + 138337 = 138446
- 127 + 138319 = 138446
- 157 + 138289 = 138446
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B3 8E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.206.
- Address
- 0.2.28.206
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.206
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 138,446 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 138446 first appears in π at position 405,506 of the decimal expansion (the 405,506ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.