128,998
128,998 is a composite number, even.
128,998 (one hundred twenty-eight thousand nine hundred ninety-eight) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 64,499. Written other ways, in hexadecimal, 0x1F7E6.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 37
- Digit product
- 10,368
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 899,821
- Recamán's sequence
- a(231,644) = 128,998
- Square (n²)
- 16,640,484,004
- Cube (n³)
- 2,146,589,155,547,992
- Divisor count
- 4
- σ(n) — sum of divisors
- 193,500
- φ(n) — Euler's totient
- 64,498
- Sum of prime factors
- 64,501
Primality
Prime factorization: 2 × 64499
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√128,998 = [359; (6, 7, 4, 5, 3, 16, 1, 3, 1, 3, 22, 1, 9, 1, 12, 1, 1, 1, 4, 2, 1, 2, 1, 6, …)]
Representations
- In words
- one hundred twenty-eight thousand nine hundred ninety-eight
- Ordinal
- 128998th
- Binary
- 11111011111100110
- Octal
- 373746
- Hexadecimal
- 0x1F7E6
- Base64
- Affm
- One's complement
- 4,294,838,297 (32-bit)
- Scientific notation
- 1.28998 × 10⁵
- As a duration
- 128,998 s = 1 day, 11 hours, 49 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκηϡϟηʹ
- Mayan (base 20)
- 𝋰·𝋢·𝋩·𝋲
- Chinese
- 一十二萬八千九百九十八
- Chinese (financial)
- 壹拾貳萬捌仟玖佰玖拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 128998, here are decompositions:
- 5 + 128993 = 128998
- 11 + 128987 = 128998
- 17 + 128981 = 128998
- 29 + 128969 = 128998
- 47 + 128951 = 128998
- 59 + 128939 = 128998
- 137 + 128861 = 128998
- 167 + 128831 = 128998
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9F 9F A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.247.230.
- Address
- 0.1.247.230
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.247.230
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 128,998 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.