138,047
138,047 is a composite number, odd.
138,047 (one hundred thirty-eight thousand forty-seven) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 7 × 13 × 37 × 41. Written other ways, in hexadecimal, 0x21B3F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 740,831
- Recamán's sequence
- a(492,733) = 138,047
- Square (n²)
- 19,056,974,209
- Cube (n³)
- 2,630,758,118,629,823
- Divisor count
- 16
- σ(n) — sum of divisors
- 178,752
- φ(n) — Euler's totient
- 103,680
- Sum of prime factors
- 98
Primality
Prime factorization: 7 × 13 × 37 × 41
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,047 = [371; (1, 1, 4, 1, 5, 2, 11, 1, 1, 9, 1, 1, 11, 2, 5, 1, 4, 1, 1, 742)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand forty-seven
- Ordinal
- 138047th
- Binary
- 100001101100111111
- Octal
- 415477
- Hexadecimal
- 0x21B3F
- Base64
- Ahs/
- One's complement
- 4,294,829,248 (32-bit)
- Scientific notation
- 1.38047 × 10⁵
- As a duration
- 138,047 s = 1 day, 14 hours, 20 minutes, 47 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλημζʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋢·𝋧
- Chinese
- 一十三萬八千零四十七
- Chinese (financial)
- 壹拾參萬捌仟零肆拾柒
Also seen as
UTF-8 encoding: F0 A1 AC BF (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.63.
- Address
- 0.2.27.63
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.63
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 138,047 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.