1,018,440
1,018,440 is a composite number, even.
1,018,440 (one million eighteen thousand four hundred forty) is an even 7-digit number. It is a composite number with 128 divisors, and factors as 2³ × 3³ × 5 × 23 × 41. Its proper divisors sum to 2,610,360, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF8A48.
Interestingness
Properties
- Parity
- Even
- Digit count
- 7
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 448,101
- Square (n²)
- 1,037,220,033,600
- Cube (n³)
- 1,056,346,371,019,584,000
- Divisor count
- 128
- σ(n) — sum of divisors
- 3,628,800
- φ(n) — Euler's totient
- 253,440
- Sum of prime factors
- 84
Primality
Prime factorization: 2 3 × 3 3 × 5 × 23 × 41
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,018,440 = [1009; (5, 1, 1, 1, 1, 1, 4, 16, 2, 6, 2, 223, 1, 3, 1, 15, 2, 10, 2, 15, 1, 3, 1, 223, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one million eighteen thousand four hundred forty
- Ordinal
- 1018440th
- Binary
- 11111000101001001000
- Octal
- 3705110
- Hexadecimal
- 0xF8A48
- Base64
- D4pI
- One's complement
- 4,293,948,855 (32-bit)
- Scientific notation
- 1.01844 × 10⁶
- As a duration
- 1,018,440 s = 11 days, 18 hours, 54 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓁨𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Chinese
- 一百零一萬八千四百四十
- Chinese (financial)
- 壹佰零壹萬捌仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1018440, here are decompositions:
- 11 + 1018429 = 1018440
- 19 + 1018421 = 1018440
- 29 + 1018411 = 1018440
- 83 + 1018357 = 1018440
- 103 + 1018337 = 1018440
- 127 + 1018313 = 1018440
- 131 + 1018309 = 1018440
- 139 + 1018301 = 1018440
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.138.72.
- Address
- 0.15.138.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.138.72
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Sunday, January 1, 8440 (MDDYYYY (US, single-digit month)).
Other possible interpretations (2)
- 8440-10-01 (MMDYYYY (US, single-digit day))
- 8440-01-10 (DDMYYYY (Euro, single-digit month))
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,018,440 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°.