128,996
128,996 is a composite number, even.
128,996 (one hundred twenty-eight thousand nine hundred ninety-six) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 7 × 17 × 271. Its proper divisors sum to 145,180, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1F7E4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 35
- Digit product
- 7,776
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 699,821
- Recamán's sequence
- a(231,648) = 128,996
- Square (n²)
- 16,639,968,016
- Cube (n³)
- 2,146,489,314,191,936
- Divisor count
- 24
- σ(n) — sum of divisors
- 274,176
- φ(n) — Euler's totient
- 51,840
- Sum of prime factors
- 299
Primality
Prime factorization: 2 2 × 7 × 17 × 271
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√128,996 = [359; (6, 4, 11, 1, 14, 2, 1, 2, 1, 4, 1, 7, 1, 1, 1, 2, 37, 2, 3, 22, 6, 4, 1, 27, …)]
Representations
- In words
- one hundred twenty-eight thousand nine hundred ninety-six
- Ordinal
- 128996th
- Binary
- 11111011111100100
- Octal
- 373744
- Hexadecimal
- 0x1F7E4
- Base64
- Affk
- One's complement
- 4,294,838,299 (32-bit)
- Scientific notation
- 1.28996 × 10⁵
- As a duration
- 128,996 s = 1 day, 11 hours, 49 minutes, 56 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκηϡϟϛʹ
- Mayan (base 20)
- 𝋰·𝋢·𝋩·𝋰
- Chinese
- 一十二萬八千九百九十六
- Chinese (financial)
- 壹拾貳萬捌仟玖佰玖拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 128996, here are decompositions:
- 3 + 128993 = 128996
- 13 + 128983 = 128996
- 37 + 128959 = 128996
- 73 + 128923 = 128996
- 139 + 128857 = 128996
- 163 + 128833 = 128996
- 229 + 128767 = 128996
- 313 + 128683 = 128996
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9F 9F A4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.247.228.
- Address
- 0.1.247.228
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.247.228
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 128,996 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.