1,026,720
1,026,720 is a composite number, even.
1,026,720 (one million twenty-six thousand seven hundred twenty) is an even 7-digit number. It is a composite number with 144 divisors, and factors as 2⁵ × 3² × 5 × 23 × 31. Its proper divisors sum to 2,747,232, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xFAAA0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 7
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 276,201
- Square (n²)
- 1,054,153,958,400
- Cube (n³)
- 1,082,320,952,168,448,000
- Divisor count
- 144
- σ(n) — sum of divisors
- 3,773,952
- φ(n) — Euler's totient
- 253,440
- Sum of prime factors
- 75
Primality
Prime factorization: 2 5 × 3 2 × 5 × 23 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,026,720 = [1013; (3, 1, 2, 9, 1, 40, 2, 4, 1, 505, 1, 4, 2, 40, 1, 9, 2, 1, 3, 2026)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- one million twenty-six thousand seven hundred twenty
- Ordinal
- 1026720th
- Binary
- 11111010101010100000
- Octal
- 3725240
- Hexadecimal
- 0xFAAA0
- Base64
- D6qg
- One's complement
- 4,293,940,575 (32-bit)
- Scientific notation
- 1.02672 × 10⁶
- As a duration
- 1,026,720 s = 11 days, 21 hours, 12 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Chinese
- 一百零二萬六千七百二十
- Chinese (financial)
- 壹佰零貳萬陸仟柒佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1026720, here are decompositions:
- 11 + 1026709 = 1026720
- 41 + 1026679 = 1026720
- 43 + 1026677 = 1026720
- 47 + 1026673 = 1026720
- 53 + 1026667 = 1026720
- 59 + 1026661 = 1026720
- 127 + 1026593 = 1026720
- 137 + 1026583 = 1026720
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.170.160.
- Address
- 0.15.170.160
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.170.160
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Friday, January 2, 6720 (MDDYYYY (US, single-digit month)).
Other possible interpretations (3)
- 6720-02-01 (DMMYYYY (Euro, single-digit day))
- 6720-10-02 (MMDYYYY (US, single-digit day))
- 6720-02-10 (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 1,026,720 and was likely granted around 1912.
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°.