998,880
998,880 is a composite number, even.
998,880 (nine hundred ninety-eight thousand eight hundred eighty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 3 × 5 × 2,081. Its proper divisors sum to 2,149,104, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF3DE0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 42
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 88,899
- Flips to (rotate 180°)
- 88,866
- Square (n²)
- 997,761,254,400
- Cube (n³)
- 996,643,761,795,072,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 3,147,984
- φ(n) — Euler's totient
- 266,240
- Sum of prime factors
- 2,099
Primality
Prime factorization: 2 5 × 3 × 5 × 2081
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√998,880 = [999; (2, 3, 1, 1, 1, 9, 1, 1, 3, 1, 3, 1, 1, 1, 1, 2, 4, 2, 2, 1, 2, 3, 1, 2, …)]
Representations
- In words
- nine hundred ninety-eight thousand eight hundred eighty
- Ordinal
- 998880th
- Binary
- 11110011110111100000
- Octal
- 3636740
- Hexadecimal
- 0xF3DE0
- Base64
- Dz3g
- One's complement
- 4,293,968,415 (32-bit)
- Scientific notation
- 9.9888 × 10⁵
- As a duration
- 998,880 s = 11 days, 13 hours, 28 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡϟηωπʹ
- Chinese
- 九十九萬八千八百八十
- Chinese (financial)
- 玖拾玖萬捌仟捌佰捌拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 998880, here are decompositions:
- 19 + 998861 = 998880
- 23 + 998857 = 998880
- 37 + 998843 = 998880
- 41 + 998839 = 998880
- 61 + 998819 = 998880
- 67 + 998813 = 998880
- 101 + 998779 = 998880
- 131 + 998749 = 998880
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.61.224.
- Address
- 0.15.61.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.61.224
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 998,880 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 998880 first appears in π at position 470,752 of the decimal expansion (the 470,752ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.