135,872
135,872 is a composite number, even.
135,872 (one hundred thirty-five thousand eight hundred seventy-two) is an even 6-digit number. It is a composite number with 28 divisors, and factors as 2⁶ × 11 × 193. Its proper divisors sum to 159,784, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x212C0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,680
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 278,531
- Square (n²)
- 18,461,200,384
- Cube (n³)
- 2,508,360,218,574,848
- Divisor count
- 28
- σ(n) — sum of divisors
- 295,656
- φ(n) — Euler's totient
- 61,440
- Sum of prime factors
- 216
Primality
Prime factorization: 2 6 × 11 × 193
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,872 = [368; (1, 1, 1, 1, 4, 3, 1, 1, 5, 5, 4, 1, 25, 1, 1, 11, 105, 4, 2, 1, 5, 14, 1, 6, …)]
Period length 56 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-five thousand eight hundred seventy-two
- Ordinal
- 135872nd
- Binary
- 100001001011000000
- Octal
- 411300
- Hexadecimal
- 0x212C0
- Base64
- AhLA
- One's complement
- 4,294,831,423 (32-bit)
- Scientific notation
- 1.35872 × 10⁵
- As a duration
- 135,872 s = 1 day, 13 hours, 44 minutes, 32 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλεωοβʹ
- Mayan (base 20)
- 𝋰·𝋳·𝋭·𝋬
- Chinese
- 一十三萬五千八百七十二
- Chinese (financial)
- 壹拾參萬伍仟捌佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 135872, here are decompositions:
- 13 + 135859 = 135872
- 31 + 135841 = 135872
- 43 + 135829 = 135872
- 73 + 135799 = 135872
- 151 + 135721 = 135872
- 211 + 135661 = 135872
- 223 + 135649 = 135872
- 271 + 135601 = 135872
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 8B 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.18.192.
- Address
- 0.2.18.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.18.192
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 135,872 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.