135,728
135,728 is a composite number, even.
135,728 (one hundred thirty-five thousand seven hundred twenty-eight) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 17 × 499. Its proper divisors sum to 143,272, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21230.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,680
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 827,531
- Square (n²)
- 18,422,089,984
- Cube (n³)
- 2,500,393,429,348,352
- Divisor count
- 20
- σ(n) — sum of divisors
- 279,000
- φ(n) — Euler's totient
- 63,744
- Sum of prime factors
- 524
Primality
Prime factorization: 2 4 × 17 × 499
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,728 = [368; (2, 2, 2, 1, 2, 1, 1, 2, 22, 1, 1, 1, 3, 5, 9, 1, 1, 45, 1, 1, 9, 5, 3, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-five thousand seven hundred twenty-eight
- Ordinal
- 135728th
- Binary
- 100001001000110000
- Octal
- 411060
- Hexadecimal
- 0x21230
- Base64
- AhIw
- One's complement
- 4,294,831,567 (32-bit)
- Scientific notation
- 1.35728 × 10⁵
- As a duration
- 135,728 s = 1 day, 13 hours, 42 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλεψκηʹ
- Mayan (base 20)
- 𝋰·𝋳·𝋦·𝋨
- Chinese
- 一十三萬五千七百二十八
- Chinese (financial)
- 壹拾參萬伍仟柒佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 135728, here are decompositions:
- 7 + 135721 = 135728
- 31 + 135697 = 135728
- 67 + 135661 = 135728
- 79 + 135649 = 135728
- 127 + 135601 = 135728
- 139 + 135589 = 135728
- 157 + 135571 = 135728
- 337 + 135391 = 135728
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 88 B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.18.48.
- Address
- 0.2.18.48
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.18.48
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 135,728 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.