138,801
138,801 is a composite number, odd.
138,801 (one hundred thirty-eight thousand eight hundred one) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 3 × 13 × 3,559. Written other ways, in hexadecimal, 0x21E31.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 108,831
- Recamán's sequence
- a(491,225) = 138,801
- Square (n²)
- 19,265,717,601
- Cube (n³)
- 2,674,100,868,736,401
- Divisor count
- 8
- σ(n) — sum of divisors
- 199,360
- φ(n) — Euler's totient
- 85,392
- Sum of prime factors
- 3,575
Primality
Prime factorization: 3 × 13 × 3559
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,801 = [372; (1, 1, 3, 1, 1, 1, 25, 18, 1, 1, 2, 3, 4, 4, 1, 1, 18, 1, 1, 4, 4, 3, 2, 1, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand eight hundred one
- Ordinal
- 138801st
- Binary
- 100001111000110001
- Octal
- 417061
- Hexadecimal
- 0x21E31
- Base64
- Ah4x
- One's complement
- 4,294,828,494 (32-bit)
- Scientific notation
- 1.38801 × 10⁵
- As a duration
- 138,801 s = 1 day, 14 hours, 33 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵ρληωαʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋠·𝋡
- Chinese
- 一十三萬八千八百零一
- Chinese (financial)
- 壹拾參萬捌仟捌佰零壹
Also seen as
UTF-8 encoding: F0 A1 B8 B1 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.49.
- Address
- 0.2.30.49
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.49
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 138,801 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.