8,742,000
8,742,000 is a composite number, even.
8,742,000 (eight million seven hundred forty-two thousand) is an even 7-digit number. It is a composite number with 160 divisors, and factors as 2⁴ × 3 × 5³ × 31 × 47. Its proper divisors sum to 20,970,384, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x856470.
Interestingness
Properties
- Parity
- Even
- Digit count
- 7
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 24 bits
- Reversed
- 2,478
- Square (n²)
- 76,422,564,000,000
- Divisor count
- 160
- σ(n) — sum of divisors
- 29,712,384
- φ(n) — Euler's totient
- 2,208,000
- Sum of prime factors
- 104
Primality
Prime factorization: 2 4 × 3 × 5 3 × 31 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√8,742,000 = [2956; (1, 2, 5, 23, 1, 1, 3, 1, 1, 2, 33, 4, 1, 3, 1, 13, 1, 119, 1, 2, 1, 48, 8, 4, …)]
Representations
- In words
- eight million seven hundred forty-two thousand
- Ordinal
- 8742000th
- Binary
- 100001010110010001110000
- Octal
- 41262160
- Hexadecimal
- 0x856470
- Base64
- hWRw
- One's complement
- 4,286,225,295 (32-bit)
- Scientific notation
- 8.742 × 10⁶
- As a duration
- 8,742,000 s = 101 days, 4 hours, 20 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓁨𓁨𓁨𓁨𓁨𓁨𓁨𓁨𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓆼𓆼
- Chinese
- 八百七十四萬二千
- Chinese (financial)
- 捌佰柒拾肆萬貳仟
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8742000, here are decompositions:
- 11 + 8741989 = 8742000
- 13 + 8741987 = 8742000
- 17 + 8741983 = 8742000
- 23 + 8741977 = 8742000
- 53 + 8741947 = 8742000
- 67 + 8741933 = 8742000
- 89 + 8741911 = 8742000
- 139 + 8741861 = 8742000
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.133.100.112.
- Address
- 0.133.100.112
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.133.100.112
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 8,742,000 and was likely granted around 2014.
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°.