998,820
998,820 is a composite number, even.
998,820 (nine hundred ninety-eight thousand eight hundred twenty) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2² × 3² × 5 × 31 × 179. Its proper divisors sum to 2,146,140, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF3DA4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 36
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 28,899
- Square (n²)
- 997,641,392,400
- Cube (n³)
- 996,464,175,556,968,000
- Divisor count
- 72
- σ(n) — sum of divisors
- 3,144,960
- φ(n) — Euler's totient
- 256,320
- Sum of prime factors
- 225
Primality
Prime factorization: 2 2 × 3 2 × 5 × 31 × 179
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√998,820 = [999; (2, 2, 3, 1, 2, 25, 1, 15, 1, 1, 3, 1, 7, 5, 2, 2, 4, 2, 1, 1, 16, 4, 1, 7, …)]
Representations
- In words
- nine hundred ninety-eight thousand eight hundred twenty
- Ordinal
- 998820th
- Binary
- 11110011110110100100
- Octal
- 3636644
- Hexadecimal
- 0xF3DA4
- Base64
- Dz2k
- One's complement
- 4,293,968,475 (32-bit)
- Scientific notation
- 9.9882 × 10⁵
- As a duration
- 998,820 s = 11 days, 13 hours, 27 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ϡϟηωκʹ
- Chinese
- 九十九萬八千八百二十
- Chinese (financial)
- 玖拾玖萬捌仟捌佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 998820, here are decompositions:
- 7 + 998813 = 998820
- 41 + 998779 = 998820
- 61 + 998759 = 998820
- 71 + 998749 = 998820
- 83 + 998737 = 998820
- 103 + 998717 = 998820
- 131 + 998689 = 998820
- 139 + 998681 = 998820
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.61.164.
- Address
- 0.15.61.164
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.61.164
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 998,820 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 998820 first appears in π at position 63,224 of the decimal expansion (the 63,224ordinal-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°.