130,640
130,640 is a composite number, even.
130,640 (one hundred thirty thousand six hundred forty) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 5 × 23 × 71. Its proper divisors sum to 190,768, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1FE50.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 46,031
- Square (n²)
- 17,066,809,600
- Cube (n³)
- 2,229,608,006,144,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 321,408
- φ(n) — Euler's totient
- 49,280
- Sum of prime factors
- 107
Primality
Prime factorization: 2 4 × 5 × 23 × 71
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√130,640 = [361; (2, 3, 1, 3, 2, 722)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty thousand six hundred forty
- Ordinal
- 130640th
- Binary
- 11111111001010000
- Octal
- 377120
- Hexadecimal
- 0x1FE50
- Base64
- Af5Q
- One's complement
- 4,294,836,655 (32-bit)
- Scientific notation
- 1.3064 × 10⁵
- As a duration
- 130,640 s = 1 day, 12 hours, 17 minutes, 20 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλχμʹ
- Mayan (base 20)
- 𝋰·𝋦·𝋬·𝋠
- Chinese
- 一十三萬零六百四十
- Chinese (financial)
- 壹拾參萬零陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 130640, here are decompositions:
- 7 + 130633 = 130640
- 19 + 130621 = 130640
- 61 + 130579 = 130640
- 109 + 130531 = 130640
- 127 + 130513 = 130640
- 151 + 130489 = 130640
- 157 + 130483 = 130640
- 163 + 130477 = 130640
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.254.80.
- Address
- 0.1.254.80
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.254.80
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 130,640 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.