988,240
988,240 is a composite number, even.
988,240 (nine hundred eighty-eight thousand two hundred forty) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 5 × 11 × 1,123. Its proper divisors sum to 1,520,528, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1450.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 31
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 42,889
- Square (n²)
- 976,618,297,600
- Cube (n³)
- 965,133,266,420,224,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 2,508,768
- φ(n) — Euler's totient
- 359,040
- Sum of prime factors
- 1,147
Primality
Prime factorization: 2 4 × 5 × 11 × 1123
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√988,240 = [994; (9, 1, 2, 1, 13, 2, 5, 2, 3, 2, 1, 39, 1, 7, 3, 4, 5, 3, 3, 1, 5, 6, 1, 2, …)]
Representations
- In words
- nine hundred eighty-eight thousand two hundred forty
- Ordinal
- 988240th
- Binary
- 11110001010001010000
- Octal
- 3612120
- Hexadecimal
- 0xF1450
- Base64
- DxRQ
- One's complement
- 4,293,979,055 (32-bit)
- Scientific notation
- 9.8824 × 10⁵
- As a duration
- 988,240 s = 11 days, 10 hours, 30 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡπησμʹ
- Chinese
- 九十八萬八千二百四十
- Chinese (financial)
- 玖拾捌萬捌仟貳佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 988240, here are decompositions:
- 3 + 988237 = 988240
- 23 + 988217 = 988240
- 41 + 988199 = 988240
- 83 + 988157 = 988240
- 131 + 988109 = 988240
- 173 + 988067 = 988240
- 179 + 988061 = 988240
- 233 + 988007 = 988240
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.20.80.
- Address
- 0.15.20.80
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.20.80
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 988,240 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 988240 first appears in π at position 131,512 of the decimal expansion (the 131,512ordinal-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°.