138,601
138,601 is a composite number, odd.
138,601 (one hundred thirty-eight thousand six hundred one) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 17 × 31 × 263. It is the 526th triangular number. Written other ways, in hexadecimal, 0x21D69.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 106,831
- Recamán's sequence
- a(491,625) = 138,601
- Square (n²)
- 19,210,237,201
- Cube (n³)
- 2,662,558,086,295,801
- Divisor count
- 8
- σ(n) — sum of divisors
- 152,064
- φ(n) — Euler's totient
- 125,760
- Sum of prime factors
- 311
Primality
Prime factorization: 17 × 31 × 263
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,601 = [372; (3, 2, 3, 14, 1, 9, 2, 2, 5, 2, 5, 1, 1, 2, 9, 3, 1, 1, 1, 1, 1, 1, 4, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand six hundred one
- Ordinal
- 138601st
- Binary
- 100001110101101001
- Octal
- 416551
- Hexadecimal
- 0x21D69
- Base64
- Ah1p
- One's complement
- 4,294,828,694 (32-bit)
- Scientific notation
- 1.38601 × 10⁵
- As a duration
- 138,601 s = 1 day, 14 hours, 30 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵ρληχαʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋪·𝋡
- Chinese
- 一十三萬八千六百零一
- Chinese (financial)
- 壹拾參萬捌仟陸佰零壹
Also seen as
UTF-8 encoding: F0 A1 B5 A9 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.105.
- Address
- 0.2.29.105
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.105
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 138,601 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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.