170,720
170,720 is a composite number, even.
170,720 (one hundred seventy thousand seven hundred twenty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 5 × 11 × 97. Its proper divisors sum to 273,808, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x29AE0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 27,071
- Recamán's sequence
- a(469,847) = 170,720
- Square (n²)
- 29,145,318,400
- Cube (n³)
- 4,975,688,757,248,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 444,528
- φ(n) — Euler's totient
- 61,440
- Sum of prime factors
- 123
Primality
Prime factorization: 2 5 × 5 × 11 × 97
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√170,720 = [413; (5, 2, 8, 4, 10, 4, 1, 1, 2, 16, 2, 8, 1, 3, 1, 205, 1, 3, 1, 8, 2, 16, 2, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- one hundred seventy thousand seven hundred twenty
- Ordinal
- 170720th
- Binary
- 101001101011100000
- Octal
- 515340
- Hexadecimal
- 0x29AE0
- Base64
- Aprg
- One's complement
- 4,294,796,575 (32-bit)
- Scientific notation
- 1.7072 × 10⁵
- As a duration
- 170,720 s = 1 day, 23 hours, 25 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ροψκʹ
- Chinese
- 一十七萬零七百二十
- Chinese (financial)
- 壹拾柒萬零柒佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 170720, here are decompositions:
- 13 + 170707 = 170720
- 19 + 170701 = 170720
- 31 + 170689 = 170720
- 73 + 170647 = 170720
- 79 + 170641 = 170720
- 163 + 170557 = 170720
- 181 + 170539 = 170720
- 211 + 170509 = 170720
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A9 AB A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.154.224.
- Address
- 0.2.154.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.154.224
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 170,720 and was likely granted around 1874.
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°.