136,640
136,640 is a composite number, even.
136,640 (one hundred thirty-six thousand six hundred forty) is an even 6-digit number. It is a composite number with 56 divisors, and factors as 2⁶ × 5 × 7 × 61. Its proper divisors sum to 241,312, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x215C0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 46,631
- Square (n²)
- 18,670,489,600
- Cube (n³)
- 2,551,135,698,944,000
- Divisor count
- 56
- σ(n) — sum of divisors
- 377,952
- φ(n) — Euler's totient
- 46,080
- Sum of prime factors
- 85
Primality
Prime factorization: 2 6 × 5 × 7 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√136,640 = [369; (1, 1, 1, 5, 2, 3, 1, 10, 1, 3, 2, 5, 1, 1, 1, 738)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-six thousand six hundred forty
- Ordinal
- 136640th
- Binary
- 100001010111000000
- Octal
- 412700
- Hexadecimal
- 0x215C0
- Base64
- AhXA
- One's complement
- 4,294,830,655 (32-bit)
- Scientific notation
- 1.3664 × 10⁵
- As a duration
- 136,640 s = 1 day, 13 hours, 57 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλϛχμʹ
- Mayan (base 20)
- 𝋱·𝋡·𝋬·𝋠
- Chinese
- 一十三萬六千六百四十
- Chinese (financial)
- 壹拾參萬陸仟陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 136640, here are decompositions:
- 19 + 136621 = 136640
- 37 + 136603 = 136640
- 67 + 136573 = 136640
- 103 + 136537 = 136640
- 109 + 136531 = 136640
- 139 + 136501 = 136640
- 157 + 136483 = 136640
- 193 + 136447 = 136640
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 97 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.21.192.
- Address
- 0.2.21.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.21.192
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 136,640 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 136640 first appears in π at position 24,716 of the decimal expansion (the 24,716ordinal-suffix:th 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.