129,984
129,984 is a composite number, even.
129,984 (one hundred twenty-nine thousand nine hundred eighty-four) is an even 6-digit number. It is a composite number with 28 divisors, and factors as 2⁶ × 3 × 677. Its proper divisors sum to 214,440, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1FBC0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 33
- Digit product
- 5,184
- Digital root
- 6
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 489,921
- Recamán's sequence
- a(33,724) = 129,984
- Square (n²)
- 16,895,840,256
- Cube (n³)
- 2,196,188,899,835,904
- Divisor count
- 28
- σ(n) — sum of divisors
- 344,424
- φ(n) — Euler's totient
- 43,264
- Sum of prime factors
- 692
Primality
Prime factorization: 2 6 × 3 × 677
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√129,984 = [360; (1, 1, 7, 11, 7, 1, 1, 720)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- one hundred twenty-nine thousand nine hundred eighty-four
- Ordinal
- 129984th
- Binary
- 11111101111000000
- Octal
- 375700
- Hexadecimal
- 0x1FBC0
- Base64
- AfvA
- One's complement
- 4,294,837,311 (32-bit)
- Scientific notation
- 1.29984 × 10⁵
- As a duration
- 129,984 s = 1 day, 12 hours, 6 minutes, 24 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκθϡπδʹ
- Mayan (base 20)
- 𝋰·𝋤·𝋳·𝋤
- Chinese
- 一十二萬九千九百八十四
- Chinese (financial)
- 壹拾貳萬玖仟玖佰捌拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 129984, here are decompositions:
- 13 + 129971 = 129984
- 17 + 129967 = 129984
- 31 + 129953 = 129984
- 47 + 129937 = 129984
- 67 + 129917 = 129984
- 83 + 129901 = 129984
- 97 + 129887 = 129984
- 131 + 129853 = 129984
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9F AF 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.251.192.
- Address
- 0.1.251.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.251.192
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 129,984 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 129984 first appears in π at position 243,220 of the decimal expansion (the 243,220ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.