138,315
138,315 is a composite number, odd.
138,315 (one hundred thirty-eight thousand three hundred fifteen) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 3 × 5 × 9,221. Written other ways, in hexadecimal, 0x21C4B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 360
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 513,831
- Recamán's sequence
- a(492,197) = 138,315
- Square (n²)
- 19,131,039,225
- Cube (n³)
- 2,646,109,690,405,875
- Divisor count
- 8
- σ(n) — sum of divisors
- 221,328
- φ(n) — Euler's totient
- 73,760
- Sum of prime factors
- 9,229
Primality
Prime factorization: 3 × 5 × 9221
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,315 = [371; (1, 9, 1, 3, 1, 1, 2, 1, 66, 1, 9, 15, 12, 1, 1, 5, 1, 1, 1, 2, 6, 3, 10, 1, …)]
Period length 60 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand three hundred fifteen
- Ordinal
- 138315th
- Binary
- 100001110001001011
- Octal
- 416113
- Hexadecimal
- 0x21C4B
- Base64
- AhxL
- One's complement
- 4,294,828,980 (32-bit)
- Scientific notation
- 1.38315 × 10⁵
- As a duration
- 138,315 s = 1 day, 14 hours, 25 minutes, 15 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλητιεʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋯·𝋯
- Chinese
- 一十三萬八千三百一十五
- Chinese (financial)
- 壹拾參萬捌仟參佰壹拾伍
Also seen as
UTF-8 encoding: F0 A1 B1 8B (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.75.
- Address
- 0.2.28.75
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.75
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 138,315 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 138315 first appears in π at position 11,000 of the decimal expansion (the 11,000ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.