104,640
104,640 is a composite number, even.
104,640 (one hundred four thousand six hundred forty) is an even 6-digit number. It is a composite number with 56 divisors, and factors as 2⁶ × 3 × 5 × 109. Its proper divisors sum to 230,640, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x198C0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 46,401
- Recamán's sequence
- a(91,911) = 104,640
- Square (n²)
- 10,949,529,600
- Cube (n³)
- 1,145,758,777,344,000
- Divisor count
- 56
- σ(n) — sum of divisors
- 335,280
- φ(n) — Euler's totient
- 27,648
- Sum of prime factors
- 129
Primality
Prime factorization: 2 6 × 3 × 5 × 109
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√104,640 = [323; (2, 12, 1, 2, 2, 1, 2, 161, 2, 1, 2, 2, 1, 12, 2, 646)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred four thousand six hundred forty
- Ordinal
- 104640th
- Binary
- 11001100011000000
- Octal
- 314300
- Hexadecimal
- 0x198C0
- Base64
- AZjA
- One's complement
- 4,294,862,655 (32-bit)
- Scientific notation
- 1.0464 × 10⁵
- As a duration
- 104,640 s = 1 day, 5 hours, 4 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρδχμʹ
- Mayan (base 20)
- 𝋭·𝋡·𝋬·𝋠
- Chinese
- 一十萬四千六百四十
- Chinese (financial)
- 壹拾萬肆仟陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 104640, here are decompositions:
- 17 + 104623 = 104640
- 43 + 104597 = 104640
- 47 + 104593 = 104640
- 61 + 104579 = 104640
- 79 + 104561 = 104640
- 89 + 104551 = 104640
- 97 + 104543 = 104640
- 103 + 104537 = 104640
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.152.192.
- Address
- 0.1.152.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.152.192
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 104,640 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 104640 first appears in π at position 108,281 of the decimal expansion (the 108,281ordinal-suffix:st 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.