189,000
189,000 is a composite number, even.
189,000 (one hundred eighty-nine thousand) is an even 6-digit number. It is a composite number with 128 divisors, and factors as 2³ × 3³ × 5³ × 7. Its proper divisors sum to 559,800, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2E248.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 981
- Flips to (rotate 180°)
- 681
- Recamán's sequence
- a(74,072) = 189,000
- Square (n²)
- 35,721,000,000
- Cube (n³)
- 6,751,269,000,000,000
- Divisor count
- 128
- σ(n) — sum of divisors
- 748,800
- φ(n) — Euler's totient
- 43,200
- Sum of prime factors
- 37
Primality
Prime factorization: 2 3 × 3 3 × 5 3 × 7
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√189,000 = [434; (1, 2, 1, 6, 2, 3, 2, 1, 1, 34, 5, 3, 1, 1, 1, 95, 1, 33, 1, 3, 1, 3, 15, 3, …)]
Period length 46 — the block in parentheses repeats forever.
Representations
- In words
- one hundred eighty-nine thousand
- Ordinal
- 189000th
- Binary
- 101110001001001000
- Octal
- 561110
- Hexadecimal
- 0x2E248
- Base64
- AuJI
- One's complement
- 4,294,778,295 (32-bit)
- Scientific notation
- 1.89 × 10⁵
- As a duration
- 189,000 s = 2 days, 4 hours, 30 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼
- Greek (Milesian)
- ͵ρπθ
- Chinese
- 十八萬九千
- Chinese (financial)
- 壹拾捌萬玖仟
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 189000, here are decompositions:
- 17 + 188983 = 189000
- 43 + 188957 = 189000
- 47 + 188953 = 189000
- 59 + 188941 = 189000
- 61 + 188939 = 189000
- 67 + 188933 = 189000
- 73 + 188927 = 189000
- 89 + 188911 = 189000
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 AE 89 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.226.72.
- Address
- 0.2.226.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.226.72
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 189,000 and was likely granted around 1875.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 189000 first appears in π at position 733,361 of the decimal expansion (the 733,361ordinal-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°.