998,890
998,890 is a composite number, even.
998,890 (nine hundred ninety-eight thousand eight hundred ninety) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 5 × 23 × 43 × 101. Written other ways, in hexadecimal, 0xF3DEA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 43
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 98,899
- Flips to (rotate 180°)
- 68,866
- Square (n²)
- 997,781,232,100
- Cube (n³)
- 996,673,694,932,369,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 1,938,816
- φ(n) — Euler's totient
- 369,600
- Sum of prime factors
- 174
Primality
Prime factorization: 2 × 5 × 23 × 43 × 101
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√998,890 = [999; (2, 4, 30, 1, 1, 7, 1, 5, 1, 10, 1, 36, 9, 1, 11, 7, 12, 2, 3, 10, 2, 5, 1, 1, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-eight thousand eight hundred ninety
- Ordinal
- 998890th
- Binary
- 11110011110111101010
- Octal
- 3636752
- Hexadecimal
- 0xF3DEA
- Base64
- Dz3q
- One's complement
- 4,293,968,405 (32-bit)
- Scientific notation
- 9.9889 × 10⁵
- As a duration
- 998,890 s = 11 days, 13 hours, 28 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡϟηωϟʹ
- Chinese
- 九十九萬八千八百九十
- Chinese (financial)
- 玖拾玖萬捌仟捌佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 998890, here are decompositions:
- 29 + 998861 = 998890
- 47 + 998843 = 998890
- 59 + 998831 = 998890
- 71 + 998819 = 998890
- 131 + 998759 = 998890
- 173 + 998717 = 998890
- 239 + 998651 = 998890
- 257 + 998633 = 998890
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.61.234.
- Address
- 0.15.61.234
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.61.234
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 998,890 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 998890 first appears in π at position 389,785 of the decimal expansion (the 389,785ordinal-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°.