988,428
988,428 is a composite number, even.
988,428 (nine hundred eighty-eight thousand four hundred twenty-eight) is an even 6-digit number. It is a composite number with 54 divisors, and factors as 2² × 3 × 7² × 41². Its proper divisors sum to 1,761,480, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF150C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 39
- Digit product
- 36,864
- Digital root
- 3
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 824,889
- Square (n²)
- 976,989,911,184
- Cube (n³)
- 965,684,183,931,778,752
- Divisor count
- 54
- σ(n) — sum of divisors
- 2,749,908
- φ(n) — Euler's totient
- 275,520
- Sum of prime factors
- 103
Primality
Prime factorization: 2 2 × 3 × 7 2 × 41 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√988,428 = [994; (5, 13, 1, 9, 4, 1, 1, 1, 4, 2, 3, 40, 3, 2, 4, 1, 1, 1, 4, 9, 1, 13, 5, 1988)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred eighty-eight thousand four hundred twenty-eight
- Ordinal
- 988428th
- Binary
- 11110001010100001100
- Octal
- 3612414
- Hexadecimal
- 0xF150C
- Base64
- DxUM
- One's complement
- 4,293,978,867 (32-bit)
- Scientific notation
- 9.88428 × 10⁵
- As a duration
- 988,428 s = 11 days, 10 hours, 33 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϡπηυκηʹ
- Chinese
- 九十八萬八千四百二十八
- Chinese (financial)
- 玖拾捌萬捌仟肆佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 988428, here are decompositions:
- 11 + 988417 = 988428
- 19 + 988409 = 988428
- 61 + 988367 = 988428
- 71 + 988357 = 988428
- 107 + 988321 = 988428
- 109 + 988319 = 988428
- 131 + 988297 = 988428
- 149 + 988279 = 988428
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.21.12.
- Address
- 0.15.21.12
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.21.12
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 988,428 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 988428 first appears in π at position 333,156 of the decimal expansion (the 333,156ordinal-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°.