987,240
987,240 is a composite number, even.
987,240 (nine hundred eighty-seven thousand two hundred forty) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 3 × 5 × 19 × 433. Its proper divisors sum to 2,137,560, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1068.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 30
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 42,789
- Square (n²)
- 974,642,817,600
- Cube (n³)
- 962,206,375,247,424,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 3,124,800
- φ(n) — Euler's totient
- 248,832
- Sum of prime factors
- 466
Primality
Prime factorization: 2 3 × 3 × 5 × 19 × 433
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√987,240 = [993; (1, 1, 2, 82, 2, 1, 1, 1986)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred eighty-seven thousand two hundred forty
- Ordinal
- 987240th
- Binary
- 11110001000001101000
- Octal
- 3610150
- Hexadecimal
- 0xF1068
- Base64
- DxBo
- One's complement
- 4,293,980,055 (32-bit)
- Scientific notation
- 9.8724 × 10⁵
- As a duration
- 987,240 s = 11 days, 10 hours, 14 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡπζσμʹ
- Chinese
- 九十八萬七千二百四十
- Chinese (financial)
- 玖拾捌萬柒仟貳佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 987240, here are decompositions:
- 13 + 987227 = 987240
- 29 + 987211 = 987240
- 31 + 987209 = 987240
- 41 + 987199 = 987240
- 47 + 987193 = 987240
- 97 + 987143 = 987240
- 113 + 987127 = 987240
- 139 + 987101 = 987240
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.16.104.
- Address
- 0.15.16.104
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.16.104
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 987,240 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.