135,820
135,820 is a composite number, even.
135,820 (one hundred thirty-five thousand eight hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,791. Its proper divisors sum to 149,444, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2128C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 28,531
- Square (n²)
- 18,447,072,400
- Cube (n³)
- 2,505,481,373,368,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 285,264
- φ(n) — Euler's totient
- 54,320
- Sum of prime factors
- 6,800
Primality
Prime factorization: 2 2 × 5 × 6791
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,820 = [368; (1, 1, 6, 7, 6, 1, 18, 25, 2, 1, 3, 30, 2, 3, 1, 1, 1, 1, 12, 1, 3, 1, 3, 1, …)]
Representations
- In words
- one hundred thirty-five thousand eight hundred twenty
- Ordinal
- 135820th
- Binary
- 100001001010001100
- Octal
- 411214
- Hexadecimal
- 0x2128C
- Base64
- AhKM
- One's complement
- 4,294,831,475 (32-bit)
- Scientific notation
- 1.3582 × 10⁵
- As a duration
- 135,820 s = 1 day, 13 hours, 43 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλεωκʹ
- Mayan (base 20)
- 𝋰·𝋳·𝋫·𝋠
- Chinese
- 一十三萬五千八百二十
- Chinese (financial)
- 壹拾參萬伍仟捌佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 135820, here are decompositions:
- 89 + 135731 = 135820
- 101 + 135719 = 135820
- 149 + 135671 = 135820
- 173 + 135647 = 135820
- 197 + 135623 = 135820
- 227 + 135593 = 135820
- 239 + 135581 = 135820
- 353 + 135467 = 135820
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 8A 8C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.18.140.
- Address
- 0.2.18.140
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.18.140
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 135,820 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 135820 first appears in π at position 463,502 of the decimal expansion (the 463,502ordinal-suffix:nd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.